{"title":"National Chimney","description":null,"products":[{"product_id":"national-chimney-m-flex-pellet-insert-basic-liner-kit","title":"National Chimney M-Flex Pellet Insert Basic Liner Kit","description":"\u003ch3 style=\"text-align: center;\"\u003eNational Chimney M-Flex Pellet Insert Basic Liner Kit\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eNational Chimney M-Flex Pellet Insert Basic Liner Kit\u003c\/strong\u003e provides a reliable, high-performance venting solution for pellet stove inserts and pellet fireplace inserts. Designed for durability and efficiency, this UL-listed chimney liner kit features a premium 316 stainless steel flexible liner that offers excellent corrosion resistance and long-lasting performance in demanding heating applications. Complete with a stove adapter featuring an EZ clamp system and a top kit, this pellet venting kit ensures a secure, professional installation while helping optimize draft and appliance performance.\u003c\/p\u003e\n\u003cp\u003eEngineered for both residential upgrades and new installations, the M-Flex Pellet Insert Basic Liner Kit simplifies the process of connecting your pellet appliance to an existing chimney. The high-quality stainless steel construction promotes safe and efficient exhaust ventilation, while the included components provide everything needed for a dependable chimney liner system. Ideal for homeowners, contractors, and installers, this pellet stove chimney liner kit delivers the safety, durability, and performance required for efficient pellet heating systems.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-end=\"299\" data-start=\"72\" data-section-id=\"16igtrv\"\u003e\n\u003cstrong data-end=\"120\" data-start=\"74\"\u003ePremium 316 Stainless Steel Chimney Liner:\u003c\/strong\u003e Constructed from mill-certified .006\" thick 316 stainless steel for superior corrosion resistance, durability, and long-term performance in pellet stove venting applications.\u003c\/li\u003e\n\u003cli data-end=\"483\" data-start=\"300\" data-section-id=\"ee4fng\"\u003e\n\u003cstrong data-end=\"330\" data-start=\"302\"\u003eUL 1777 Listed \u0026amp; Tested:\u003c\/strong\u003e Certified for safe use with pellet stoves, wood stoves, coal, oil, and gas-burning appliances, ensuring reliable and code-compliant chimney venting.\u003c\/li\u003e\n\u003cli data-end=\"650\" data-start=\"484\" data-section-id=\"19krifs\"\u003e\n\u003cstrong data-end=\"524\" data-start=\"486\"\u003eDesigned for Pellet Stove Inserts:\u003c\/strong\u003e Engineered specifically to improve the performance and efficiency of pellet fireplace inserts and pellet heating systems.\u003c\/li\u003e\n\u003cli data-end=\"827\" data-start=\"651\" data-section-id=\"1cbbgzd\"\u003e\n\u003cstrong data-end=\"689\" data-start=\"653\"\u003eEZ Clamp Stove Adapter Included:\u003c\/strong\u003e Features a convenient tool-free EZ clamp connection that creates a secure, airtight fit between the liner and stove or insert collar.\u003c\/li\u003e\n\u003cli data-end=\"1010\" data-start=\"828\" data-section-id=\"l3p5bz\"\u003e\n\u003cstrong data-end=\"862\" data-start=\"830\"\u003eComplete Pellet Venting Kit:\u003c\/strong\u003e Includes everything needed for installation:\n\u003cul data-end=\"1010\" data-start=\"910\"\u003e\n\u003cli data-end=\"946\" data-start=\"910\" data-section-id=\"1y1lpqu\"\u003e316 Stainless Steel Flexible Liner\u003c\/li\u003e\n\u003cli data-end=\"973\" data-start=\"949\" data-section-id=\"1ud2d9k\"\u003eEZ Clamp Stove Adapter\u003c\/li\u003e\n\u003cli data-end=\"986\" data-start=\"976\" data-section-id=\"ao36em\"\u003eRain Cap\u003c\/li\u003e\n\u003cli data-end=\"1010\" data-start=\"989\" data-section-id=\"gd7tkn\"\u003e13\" x 13\" Top Plate\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1154\" data-start=\"1011\" data-section-id=\"pnhamj\"\u003e\n\u003cstrong data-end=\"1045\" data-start=\"1013\"\u003eImproves Heating Efficiency:\u003c\/strong\u003e Helps optimize draft performance, promote proper exhaust flow, and support efficient pellet stove operation.\u003c\/li\u003e\n\u003cli data-end=\"1313\" data-start=\"1155\" data-section-id=\"3c0a8d\"\u003e\n\u003cstrong data-end=\"1192\" data-start=\"1157\"\u003eCorrosion \u0026amp; Moisture Resistant:\u003c\/strong\u003e Built to withstand chimney condensation, moisture, and harsh venting environments for dependable year-round performance.\u003c\/li\u003e\n\u003cli data-end=\"1455\" data-start=\"1314\" data-section-id=\"dwas1k\"\u003e\n\u003cstrong data-end=\"1352\" data-start=\"1316\"\u003eFlexible Stainless Steel Design:\u003c\/strong\u003e Durable yet flexible construction allows easier installation through existing masonry chimney systems.\u003c\/li\u003e\n\u003cli data-end=\"1592\" data-start=\"1456\" data-section-id=\"1enfzpy\"\u003e\n\u003cstrong data-end=\"1491\" data-start=\"1458\"\u003eHigh-Temperature Performance:\u003c\/strong\u003e Engineered to handle demanding heating conditions while maintaining structural integrity and safety.\u003c\/li\u003e\n\u003cli data-end=\"1742\" data-start=\"1593\" data-section-id=\"gfophv\"\u003e\n\u003cstrong data-end=\"1632\" data-start=\"1595\"\u003eReduces Creosote \u0026amp; Vent Build-Up:\u003c\/strong\u003e Smooth stainless steel interior helps minimize residue accumulation and supports cleaner venting performance.\u003c\/li\u003e\n\u003cli data-end=\"1911\" data-start=\"1743\" data-section-id=\"zc8m6g\"\u003e\n\u003cstrong data-end=\"1777\" data-start=\"1745\"\u003eAvailable in Multiple Sizes:\u003c\/strong\u003e Offered in 25-foot and 35-foot lengths and 3-inch or 4-inch diameters to accommodate a variety of pellet stove installations.\u003c\/li\u003e\n\u003cli data-end=\"2049\" data-start=\"1912\" data-section-id=\"1fasoa0\"\u003e\n\u003cstrong data-end=\"1946\" data-start=\"1914\"\u003eWeather Protection Included:\u003c\/strong\u003e Rain cap and top plate help prevent water intrusion, debris entry, and weather-related chimney damage.\u003c\/li\u003e\n\u003cli data-end=\"2189\" data-start=\"2050\" data-section-id=\"ftfhcq\"\u003e\n\u003cstrong data-end=\"2101\" data-start=\"2052\"\u003eProfessional-Grade Chimney Relining Solution:\u003c\/strong\u003e Ideal for upgrading older chimney systems when installing a new pellet stove or insert.\u003c\/li\u003e\n\u003cli data-end=\"2324\" data-start=\"2190\" data-section-id=\"78z5at\"\u003e\n\u003cstrong data-end=\"2233\" data-start=\"2192\"\u003eSafe \u0026amp; Reliable Pellet Stove Venting:\u003c\/strong\u003e Provides a dependable pathway for exhaust gases while supporting safe appliance operation.\u003c\/li\u003e\n\u003cli data-end=\"2465\" data-start=\"2325\" data-section-id=\"osqyc7\"\u003e\n\u003cstrong data-end=\"2375\" data-start=\"2327\"\u003eCompatible with Residential Heating Systems:\u003c\/strong\u003e Suitable for homeowners, contractors, chimney professionals, and pellet stove installers.\u003c\/li\u003e\n\u003cli data-is-last-node=\"\" data-end=\"2670\" data-start=\"2466\" data-section-id=\"1iqarwm\"\u003e\n\u003cstrong data-end=\"2500\" data-start=\"2468\"\u003eImportant Installation Note:\u003c\/strong\u003e A \u003cstrong data-is-only-node=\"\" data-end=\"2535\" data-start=\"2503\"\u003ecleanout tee is not included\u003c\/strong\u003e and may be required by certain pellet stove or insert manufacturers. Always verify appliance venting requirements before installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eDiameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSKU\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e3\"\u003c\/td\u003e\n\u003ctd\u003e25'\u003c\/td\u003e\n\u003ctd\u003e316 Stainless Steel\u003c\/td\u003e\n\u003ctd\u003eCB325BK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3\"\u003c\/td\u003e\n\u003ctd\u003e35'\u003c\/td\u003e\n\u003ctd\u003e316 Stainless Steel\u003c\/td\u003e\n\u003ctd\u003eCB335BK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4\"\u003c\/td\u003e\n\u003ctd\u003e25'\u003c\/td\u003e\n\u003ctd\u003e316 Stainless Steel\u003c\/td\u003e\n\u003ctd\u003eCB425BK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4\"\u003c\/td\u003e\n\u003ctd\u003e35'\u003c\/td\u003e\n\u003ctd\u003e316 Stainless Steel\u003c\/td\u003e\n\u003ctd\u003eCB435BK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLimited Lifetime Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDocuments \u0026amp; Files\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0780\/6926\/8771\/files\/MflexLiner_Brochure_MFlex.pdf?v=1781595656\" target=\"_blank\"\u003eProduct Brochure\u003c\/a\u003e\u003ca rel=\"noopener\" title=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0100\/7917\/4734\/files\/Le_Griddle_-_GEE40_Owner_s_Manual_-_7.29.2020_1.pdf?v=1627960928\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0100\/7917\/4734\/files\/Le_Griddle_-_GEE40_Owner_s_Manual_-_7.29.2020_1.pdf?v=1627960928\" target=\"_blank\"\u003e\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0780\/6926\/8771\/files\/CB-AL-Install.pdf?v=1781595640\" target=\"_blank\"\u003eInstallation Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"National Chimney","offers":[{"title":"25 Foot \/ 3 inch","offer_id":55239683899683,"sku":"CB325BK","price":599.24,"currency_code":"USD","in_stock":true},{"title":"25 Foot \/ 4 inch","offer_id":55239683932451,"sku":"CB425BK","price":689.1,"currency_code":"USD","in_stock":true},{"title":"35 Foot \/ 3 inch","offer_id":55239683965219,"sku":"CB335BK","price":798.96,"currency_code":"USD","in_stock":true},{"title":"35 Foot \/ 4 inch","offer_id":55239683997987,"sku":"CB435BK","price":898.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0780\/6926\/8771\/files\/National-Chimney-M-Flex-Wood-Burning-Insert-Basic-Liner-Kit-National-Chimney-Dreamwood-Living-233672141.jpg?v=1783013407"},{"product_id":"national-chimney-m-flex-wood-burning-insert-basic-liner-kit","title":"National Chimney M-Flex Wood-Burning Insert Basic Liner Kit","description":"\u003ch3 style=\"text-align: center;\"\u003eNational Chimney M-Flex Wood-Burning Insert Basic Liner Kit\u003c\/h3\u003e\n\u003cdiv class=\"wpb_text_column wpb_content_element\"\u003e\n\u003cdiv class=\"wpb_wrapper\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eNational Chimney M-Flex Wood-Burning Insert Basic Liner Kit\u003c\/strong\u003e is a premium venting solution engineered for wood-burning fireplace inserts and wood stoves. Designed to deliver exceptional durability and performance, this UL-listed chimney liner kit features a high-quality 316 stainless steel chimney liner that offers superior resistance to corrosion and high temperatures. The kit also includes a convenient stove adapter with an EZ clamp and a complete top kit, ensuring a secure fit and hassle-free installation for both homeowners and professional installers.\u003c\/p\u003e\n\u003cp\u003eEnhance the safety and efficiency of your heating system with the National Chimney M-Flex Basic Liner Kit. This flexible chimney liner kit promotes optimal draft performance, improved ventilation, and long-lasting reliability for your wood stove chimney system. Ideal for chimney relining projects, this stainless steel chimney liner kit provides a dependable solution for maintaining proper exhaust flow while maximizing the performance of your wood-burning appliance.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003ePremium 316 Stainless Steel Chimney Liner\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Constructed from mill-certified \u003c\/span\u003e316 stainless steel, offering exceptional corrosion resistance, heat tolerance, and long-lasting durability for wood-burning fireplace inserts and wood stoves.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eUL 1777 Listed Chimney Liner Kit\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Tested and certified to \u003c\/span\u003eUL 1777 standards\u003cspan\u003e, ensuring safe and reliable venting performance for wood, coal, oil, gas, and pellet-burning appliances.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eEZ Clamp Stove Adapter\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Features a convenient\u003cstrong\u003e \u003c\/strong\u003e\u003c\/span\u003eEZ clamp stove adapter that creates a secure, tool-free connection between the flexible chimney liner\u003cspan\u003e and stove or insert collar for quick installation.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eComplete Chimney Liner Kit\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Includes a \u003c\/span\u003e316 stainless steel liner, EZ clamp adapter, rain cap, and 13\" x 13\" top plate\u003cspan\u003e, providing everything needed for a professional chimney relining project.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eHeavy-Duty Flexible Construction\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Manufactured from \u003c\/span\u003e.006\" thick stainless steel\u003cspan\u003e for the ideal balance of strength, flexibility, and easy maneuverability through existing masonry chimneys.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eImproves Wood Stove Efficiency\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Enhances draft performance, promotes cleaner combustion, and helps maximize the heating efficiency of your \u003c\/span\u003ewood-burning stove or fireplace insert.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eReduces Creosote Buildup\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – The smooth interior surface supports improved airflow and helps minimize creosote accumulation, contributing to safer chimney operation and easier maintenance.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eWeather-Resistant Protection\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Includes a durable rain cap and top plate designed to prevent moisture, debris, and animals from entering the chimney system.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eMultiple Sizes Available\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Offered in \u003c\/span\u003e15', 25', and 35' lengths with 6-inch and 8-inch diameters to accommodate a wide range of chimney liner installation requirements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eIdeal for Chimney Relining Applications\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – A dependable \u003c\/span\u003estainless steel chimney liner kit\u003cspan\u003e designed for upgrading existing chimneys and creating a safe, efficient venting system for wood-burning heating appliances.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"wpb_text_column wpb_content_element\"\u003e\n\u003cdiv class=\"wpb_wrapper\"\u003e\n\u003ch3 style=\"text-align: left;\"\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eDiameter\u003c\/th\u003e\n\u003cth\u003eLength\u003c\/th\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e6\"\u003c\/td\u003e\n\u003ctd\u003e15'\u003c\/td\u003e\n\u003ctd\u003e316 Stainless Steel\u003c\/td\u003e\n\u003ctd\u003eCB615BK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e6\"\u003c\/td\u003e\n\u003ctd\u003e25'\u003c\/td\u003e\n\u003ctd\u003e316 Stainless Steel\u003c\/td\u003e\n\u003ctd\u003eCB625BK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e6\"\u003c\/td\u003e\n\u003ctd\u003e35'\u003c\/td\u003e\n\u003ctd\u003e316 Stainless Steel\u003c\/td\u003e\n\u003ctd\u003eCB635BK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e8\"\u003c\/td\u003e\n\u003ctd\u003e15'\u003c\/td\u003e\n\u003ctd\u003e316 Stainless Steel\u003c\/td\u003e\n\u003ctd\u003eCB815BK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e8\"\u003c\/td\u003e\n\u003ctd\u003e25'\u003c\/td\u003e\n\u003ctd\u003e316 Stainless Steel\u003c\/td\u003e\n\u003ctd\u003eCB825BK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e8\"\u003c\/td\u003e\n\u003ctd\u003e35'\u003c\/td\u003e\n\u003ctd\u003e316 Stainless Steel\u003c\/td\u003e\n\u003ctd\u003eCB835BK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wpb_wrapper\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"text-align: left;\"\u003eWarranty\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLimited Lifetime Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDocuments \u0026amp; Files\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0780\/6926\/8771\/files\/MflexLiner_Brochure_MFlex.pdf?v=1781595656\" rel=\"noopener\" target=\"_blank\"\u003eProduct Brochure\u003c\/a\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0100\/7917\/4734\/files\/Le_Griddle_-_GEE40_Owner_s_Manual_-_7.29.2020_1.pdf?v=1627960928\" title=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0100\/7917\/4734\/files\/Le_Griddle_-_GEE40_Owner_s_Manual_-_7.29.2020_1.pdf?v=1627960928\" rel=\"noopener\" target=\"_blank\"\u003e\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0780\/6926\/8771\/files\/CB-AL-Install.pdf?v=1781595640\" rel=\"noopener\" target=\"_blank\"\u003eInstallation Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"National Chimney","offers":[{"title":"15 Foot \/ 6 inch","offer_id":55239692255523,"sku":"CB615BK","price":633.58,"currency_code":"USD","in_stock":true},{"title":"15 Foot \/ 8 inch","offer_id":55239692288291,"sku":"CB815BK","price":871.22,"currency_code":"USD","in_stock":true},{"title":"25 Foot \/ 6 inch","offer_id":55239692321059,"sku":"CB625BK","price":910.82,"currency_code":"USD","in_stock":true},{"title":"25 Foot \/ 8 inch","offer_id":55239692353827,"sku":"CB825BK","price":1132.5,"currency_code":"USD","in_stock":true},{"title":"35 Foot \/ 6 inch","offer_id":55239698120995,"sku":"CB635BK","price":1222.42,"currency_code":"USD","in_stock":true},{"title":"35 Foot \/ 8 inch","offer_id":55239698153763,"sku":"CB835BK","price":1384.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0780\/6926\/8771\/files\/National-Chimney-M-Flex-Wood-Burning-Insert-Basic-Liner-Kit-National-Chimney-Dreamwood-Living-233672141.jpg?v=1783013407"},{"product_id":"national-chimney-m-flex-pellet-insert-basic-liner-kit-with-cleanout-tee","title":"National Chimney M-Flex Pellet Insert Basic Liner Kit with Cleanout Tee","description":"\u003ch3 style=\"text-align: center;\"\u003eNational Chimney M-Flex Pellet Insert Basic Liner Kit\u003c\/h3\u003e\n\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv dir=\"auto\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eNational Chimney M-Flex Pellet Insert Basic Liner Kit with Cleanout Tee\u003c\/strong\u003e is a premium pellet stove chimney liner kit designed for safe, efficient venting of pellet and corn-burning stoves. Featuring a durable stainless steel chimney liner and integrated cleanout tee, this complete kit simplifies installation while promoting reliable exhaust performance.\u003c\/p\u003e\n\u003cp\u003eBuilt for long-lasting durability and optimal airflow, the M-Flex Pellet Insert Liner Kit provides a dependable venting solution for residential heating systems. The included cleanout tee allows easier maintenance and cleaning, making this UL-listed pellet stove vent kit an ideal choice for homeowners seeking safe, efficient, and professional-grade chimney venting.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003ePremium 316 Stainless Steel Pellet Stove Liner\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Constructed from high-quality \u003c\/span\u003e316 stainless steel, this pellet stove chimney liner delivers superior corrosion resistance, durability, and long-lasting performance in demanding venting environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eShort-Body Pellet Tee for Secure Connections\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Includes a specially designed \u003c\/span\u003epellet stove cleanout tee\u003cspan\u003e that provides a tight, reliable connection between the liner and pellet appliance for efficient exhaust flow and simplified maintenance.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eUL 1777 Listed Venting System\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Certified to \u003c\/span\u003eUL 1777 standards, ensuring safe and dependable operation for pellet stove venting systems and corn-burning appliances.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eEZ Clamp Installation System\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Features an innovative \u003c\/span\u003eEZ clamp connection system that enables fast, secure, and tool-free installation of the flexible pellet liner, reducing setup time and complexity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eComplete Pellet Stove Liner Kit\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Designed as an all-in-one \u003c\/span\u003epellet stove chimney liner kit\u003cspan\u003e, eliminating the need for a separate tee and providing essential components for a streamlined installation process.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eOptimized for Pellet and Corn-Burning Stoves\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Specifically engineered for use with \u003c\/span\u003epellet stove inserts, pellet-burning stoves, and corn-burning heating appliances\u003cspan\u003e, ensuring versatile compatibility.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eEnhances Venting Efficiency\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Promotes proper draft and exhaust flow to improve the overall performance, heating efficiency, and reliability of your \u003c\/span\u003epellet stove venting system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eCorrosion-Resistant Construction\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – The \u003c\/span\u003e316 stainless steel flex liner\u003cspan\u003e withstands moisture, flue gases, and harsh operating conditions for dependable, long-term use.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eEasy Maintenance with Cleanout Tee Design\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – The integrated \u003c\/span\u003ecleanout tee provides convenient access for routine inspection and cleaning, helping maintain peak venting performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eIdeal for Chimney Relining Projects\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – A professional-grade \u003c\/span\u003eflexible chimney liner kit\u003cspan\u003e perfect for upgrading existing chimneys and creating a safe, efficient venting solution for pellet heating systems.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 33.9041%;\"\u003eComponent\u003c\/th\u003e\n\u003cth style=\"width: 65.7349%;\"\u003eDescription\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 33.9041%;\"\u003e\u003cstrong\u003eLiner Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.7349%;\"\u003e316 Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 33.9041%;\"\u003e\u003cstrong\u003eLiner Thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.7349%;\"\u003e.006\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 33.9041%;\"\u003e\u003cstrong\u003eLiner Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.7349%;\"\u003e3\" or 4\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 33.9041%;\"\u003e\u003cstrong\u003eTee Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.7349%;\"\u003eShort-body pellet tee\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 33.9041%;\"\u003e\u003cstrong\u003eInstallation Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.7349%;\"\u003ePellet and corn-burning stoves or inserts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 33.9041%;\"\u003e\u003cstrong\u003eCertification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.7349%;\"\u003eUL 1777 Listed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 33.9041%;\"\u003e\u003cstrong\u003eConnection System\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.7349%;\"\u003eEZ Clamp for secure fit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 33.9041%;\"\u003e\u003cstrong\u003eKit Includes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.7349%;\"\u003eFlex liner, short-body pellet tee, rain cap, 13\" × 13\" top plate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLimited Lifetime Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDocuments \u0026amp; Files\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0780\/6926\/8771\/files\/MflexLiner_Brochure_MFlex.pdf?v=1781595656\" target=\"_blank\"\u003eProduct Brochure\u003c\/a\u003e\u003ca rel=\"noopener\" title=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0100\/7917\/4734\/files\/Le_Griddle_-_GEE40_Owner_s_Manual_-_7.29.2020_1.pdf?v=1627960928\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0100\/7917\/4734\/files\/Le_Griddle_-_GEE40_Owner_s_Manual_-_7.29.2020_1.pdf?v=1627960928\" target=\"_blank\"\u003e\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0780\/6926\/8771\/files\/CB-AL-Install.pdf?v=1781595640\" target=\"_blank\"\u003eInstallation Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"National Chimney","offers":[{"title":"25 Foot \/ 3 inch","offer_id":55239708246307,"sku":"CB325KITP","price":821.8,"currency_code":"USD","in_stock":true},{"title":"25 Foot \/ 4 inch","offer_id":55239708279075,"sku":"CB425KITP","price":865.98,"currency_code":"USD","in_stock":true},{"title":"35 Foot \/ 3 inch","offer_id":55239708311843,"sku":"CB335KITP","price":989.18,"currency_code":"USD","in_stock":true},{"title":"35 Foot \/ 4 inch","offer_id":55239708344611,"sku":"CB435KITP","price":992.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0780\/6926\/8771\/files\/National-Chimney-M-Flex-Pellet-Insert-Basic-Liner-Kit-with-Cleanout-Tee-National-Chimney-Dreamwood-Living-233672360.jpg?v=1783013416"},{"product_id":"national-chimney-m-flex-standard-liner-kit-with-tee","title":"National Chimney M-Flex Standard Liner Kit with Tee","description":"\u003ch3 style=\"text-align: center;\"\u003eNational Chimney M-Flex Standard Liner Kit with Tee\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eNational Chimney M-Flex Standard Liner Kit with Tee\u003c\/strong\u003e, a premium all-fuel chimney liner kit designed for wood-burning, oil, coal, and gas appliances. This UL 1777 listed stainless steel chimney liner delivers superior durability, corrosion resistance, and safe, efficient venting performance for long-term reliability.\u003c\/p\u003e\n\u003cp\u003eIdeal for chimney relining projects, the M-Flex Standard Liner Kit provides a complete venting solution with a durable stainless steel construction and integrated tee for secure connection and easy installation. This chimney liner kit enhances draft performance, improves appliance efficiency, and helps reduce creosote buildup. Perfect for upgrading existing masonry chimneys, it ensures reliable all-fuel venting for wood stoves, fireplaces, and oil or gas heating systems, long-lasting safe chimney venting performance.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003ePremium 316 Stainless Steel Chimney Liner\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Manufactured from high-quality \u003c\/span\u003e.006” thick 316 stainless steel, this chimney liner kit delivers exceptional durability, heat resistance, and long-lasting performance for chimney relining systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eUL 1777 Certified All-Fuel Chimney Liner Kit\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Fully tested and \u003c\/span\u003eUL 1777 listed, ensuring safe, reliable venting for wood, oil, coal, and gas appliances in residential and professional installations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eComplete Pre-Packaged Chimney Liner Kit\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Includes a \u003c\/span\u003eflexible stainless steel liner, top kit, and two-part tee with removable snout and end cap, providing everything needed for a fast and efficient installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eFlexible \u0026amp; Corrosion-Resistant Design\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Engineered for easy installation in existing masonry chimneys, this\u003cstrong\u003e \u003c\/strong\u003e\u003c\/span\u003eflex chimney liner\u003cspan\u003e resists corrosion, moisture, and extreme temperature changes for long-term reliability.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eStrong Interlocking Construction\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Features a secure interlocking system that ensures a \u003c\/span\u003egas-tight and watertight seal, improving safety and overall chimney venting performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eTwo-Part Tee with Cleanout Access\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Includes a \u003c\/span\u003edurable chimney tee with snout and end cap\u003cspan\u003e, making inspections and maintenance simple and convenient.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eOptimized for Multiple Fuel Types\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Compatible with \u003c\/span\u003ewood-burning stoves, oil furnaces, coal systems, and gas appliances, making it a versatile all-fuel chimney liner kit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eCorrugated Flexible Construction\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Designed to expand and contract with heat cycles, ensuring structural integrity and consistent performance over time.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eAvailable Size Options\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Offered in \u003c\/span\u003e6-inch and 8-inch diameters, with 25-foot and 35-foot length options\u003cspan\u003e to suit a variety of chimney configurations.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eComplete Installation Top Kit Included\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Comes with a \u003c\/span\u003erain cap and 13” x 13” top plate\u003cspan\u003e, providing full weather protection and a professional-grade chimney finishing solution.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eLifetime Warranty Protection\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Backed by a \u003c\/span\u003elifetime warranty\u003cspan\u003e, ensuring long-term peace of mind and dependable chimney system performance when properly maintained.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003e6\" Diameter\u003c\/th\u003e\n\u003cth\u003e8\" Diameter\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e316 Stainless Steel (.006” thick)\u003c\/td\u003e\n\u003ctd\u003e316 Stainless Steel (.006” thick)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLiner Lengths\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e25 ft, 35 ft\u003c\/td\u003e\n\u003ctd\u003e25 ft, 35 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCertification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUL 1777 Listed\u003c\/td\u003e\n\u003ctd\u003eUL 1777 Listed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFuel Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWood, Oil, Coal, Gas\u003c\/td\u003e\n\u003ctd\u003eWood, Oil, Coal, Gas\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTee Snout Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10” removable snout\u003c\/td\u003e\n\u003ctd\u003e10” removable snout\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTop Kit Includes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRain cap, 13” x 13” top plate\u003c\/td\u003e\n\u003ctd\u003eRain cap, 13” x 13” top plate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLifetime Transferable\u003c\/td\u003e\n\u003ctd\u003eLifetime Transferable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLimited Lifetime Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDocuments \u0026amp; Files\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0780\/6926\/8771\/files\/MflexLiner_Brochure_MFlex.pdf?v=1781595656\" target=\"_blank\"\u003eProduct Brochure\u003c\/a\u003e\u003ca rel=\"noopener\" title=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0100\/7917\/4734\/files\/Le_Griddle_-_GEE40_Owner_s_Manual_-_7.29.2020_1.pdf?v=1627960928\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0100\/7917\/4734\/files\/Le_Griddle_-_GEE40_Owner_s_Manual_-_7.29.2020_1.pdf?v=1627960928\" target=\"_blank\"\u003e\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0780\/6926\/8771\/files\/CB-AL-Install.pdf?v=1781595640\" target=\"_blank\"\u003eInstallation Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"National Chimney","offers":[{"title":"25 Foot \/ 6 inch","offer_id":55239745306915,"sku":"CB625KIT","price":1064.5,"currency_code":"USD","in_stock":true},{"title":"25 Foot \/ 8 inch","offer_id":55239745339683,"sku":"CB825KIT","price":1369.62,"currency_code":"USD","in_stock":true},{"title":"35 Foot \/ 6 inch","offer_id":55239745372451,"sku":"CB635KIT","price":1360.36,"currency_code":"USD","in_stock":true},{"title":"35 Foot \/ 8 inch","offer_id":55239745405219,"sku":"CB835KIT","price":1704.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0780\/6926\/8771\/files\/National-Chimney-M-Flex-Standard-Liner-Kit-with-Tee-National-Chimney-Dreamwood-Living-233672947.jpg?v=1783013421"},{"product_id":"national-chimney-smoothwall-wood-burning-insert-liner-kit-6-inch","title":"National Chimney Smoothwall Wood-Burning Insert Liner Kit | 6-Inch","description":"\u003ch3 style=\"text-align: center;\"\u003eNational Chimney Smoothwall Wood-Burning Insert Liner Kit | 6-Inch\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eNational Chimney Smoothwall Wood-Burning Insert Liner Kit\u003c\/strong\u003e, engineered for high-performance wood stove venting and fireplace insert applications. This premium smooth wall chimney liner kit is designed to deliver superior draft efficiency, improved airflow, and safer operation. Built from durable 316L stainless steel smoothwall liner, it provides excellent corrosion resistance and long-lasting reliability for demanding heating environments.\u003c\/p\u003e\n\u003cp\u003eIdeal for installations where no tee or tee cap is required, this UL-style chimney liner system ensures a clean, direct venting path for optimal performance. The included stove adapter with EZ clamp connection system creates an airtight, secure fit between the liner and appliance, making installation fast and dependable. Perfect for chimney relining projects, this wood-burning insert liner kit enhances heating efficiency while maintaining consistent, safe exhaust flow for wood stoves and fireplace inserts.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eHigh-Efficiency Smoothwall Chimney Liner Design\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – The\u003cstrong\u003e \u003c\/strong\u003e\u003c\/span\u003e316L stainless steel smoothwall liner delivers up to 20% more airflow than standard corrugated liners, improving draft performance and making it a top-tier wood-burning stove liner kit for enhanced heating efficiency.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eUL 1777 Listed All-Fuel Chimney Liner Kit\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Fully tested and certified for \u003c\/span\u003ewood, coal, oil, pellet, and gas appliances, ensuring safe and reliable performance across multiple all-fuel chimney venting applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003ePremium 316L Stainless Steel Construction\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Built from double-layered, mill-certified \u003c\/span\u003e.005” thick 316L stainless steel, this flexible chimney liner kit\u003cspan\u003e offers exceptional resistance to heat, corrosion, and moisture for long-lasting durability.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eEZ Clamp Stove Adapter System\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Includes a pre-fitted \u003c\/span\u003estove adapter with EZ clamp connection, providing a secure, airtight seal between the liner and appliance for fast, tool-free installation and improved venting safety.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eComplete Chimney Liner Installation Kit\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Comes with a \u003c\/span\u003esmoothwall liner, 13” x 13” top plate, and rain cap, offering a full chimney relining solution for efficient and professional installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eOptimized for Wood Stove \u0026amp; Fireplace Inserts\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Designed specifically for \u003c\/span\u003ewood-burning insert liner kit applications\u003cspan\u003e, delivering improved airflow, stronger draft, and reduced creosote buildup for safer operation.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eEnhanced Draft \u0026amp; Creosote Reduction\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Smooth interior wall design promotes consistent airflow, helping to minimize \u003c\/span\u003ecreosote accumulation\u003cspan\u003e and maintain cleaner chimney performance.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eFlexible Length Options for Installation\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Available in \u003c\/span\u003e15 ft, 25 ft, and 35 ft lengths, making it suitable for a wide range of chimney relining and venting system configurations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eImproved Venting Efficiency for Maximum Performance\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Engineered for optimal exhaust flow, ensuring your \u003c\/span\u003efireplace insert or wood stove operates at peak efficiency and safety.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eWeather-Resistant Top Kit Protection\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Includes a durable \u003c\/span\u003erain cap and top plate system\u003cspan\u003e that protects against moisture, debris, and downdrafts for long-term chimney system reliability.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 11.7329%;\"\u003eDiameter\u003c\/th\u003e\n\u003cth style=\"width: 9.02527%;\"\u003eLength\u003c\/th\u003e\n\u003cth style=\"width: 22.2022%;\"\u003eMaterial\u003c\/th\u003e\n\u003cth style=\"width: 41.3822%;\"\u003eIncludes\u003c\/th\u003e\n\u003cth style=\"width: 14.2135%;\"\u003eSKU\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 11.7329%;\"\u003e6\"\u003c\/td\u003e\n\u003ctd style=\"width: 9.02527%;\"\u003e15'\u003c\/td\u003e\n\u003ctd style=\"width: 22.2022%;\"\u003e316L Stainless Steel\u003c\/td\u003e\n\u003ctd style=\"width: 41.3822%;\"\u003eLiner, Stove Adapter, Rain Cap, Top Plate\u003c\/td\u003e\n\u003ctd style=\"width: 14.2135%;\"\u003eSM615B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 11.7329%;\"\u003e6\"\u003c\/td\u003e\n\u003ctd style=\"width: 9.02527%;\"\u003e25'\u003c\/td\u003e\n\u003ctd style=\"width: 22.2022%;\"\u003e316L Stainless Steel\u003c\/td\u003e\n\u003ctd style=\"width: 41.3822%;\"\u003eLiner, Stove Adapter, Rain Cap, Top Plate\u003c\/td\u003e\n\u003ctd style=\"width: 14.2135%;\"\u003eSM625B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 11.7329%;\"\u003e6\"\u003c\/td\u003e\n\u003ctd style=\"width: 9.02527%;\"\u003e35'\u003c\/td\u003e\n\u003ctd style=\"width: 22.2022%;\"\u003e316L Stainless Steel\u003c\/td\u003e\n\u003ctd style=\"width: 41.3822%;\"\u003eLiner, Stove Adapter, Rain Cap, Top Plate\u003c\/td\u003e\n\u003ctd style=\"width: 14.2135%;\"\u003eSM635B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLimited Lifetime Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDocuments \u0026amp; Files\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0780\/6926\/8771\/files\/SmoothwallLiner_Brochure_MFlex.pdf?v=1781601228\" rel=\"noopener\" target=\"_blank\"\u003eProduct Brochure\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"National Chimney","offers":[{"title":"15 Foot","offer_id":55239765098787,"sku":"SW615BK","price":704.76,"currency_code":"USD","in_stock":true},{"title":"25 Foot","offer_id":55239765164323,"sku":"SW625BK","price":1143.12,"currency_code":"USD","in_stock":true},{"title":"35 Foot","offer_id":55239771160867,"sku":"SW625BK","price":1581.44,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0780\/6926\/8771\/files\/National-Chimney-Smoothwall-Wood-Burning-Insert-Liner-Kit-_-6-Inch-National-Chimney-Dreamwood-Living-233673011.jpg?v=1783013430"},{"product_id":"national-chimney-smoothwall-standard-liner-kit-with-tee-6-inch","title":"National Chimney Smoothwall Standard Liner Kit with Tee | 6-Inch","description":"\u003ch3 style=\"text-align: center;\"\u003eNational Chimney Smoothwall Standard Liner Kit with Tee\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eNational Chimney Smoothwall Standard Liner Kit\u003c\/strong\u003e, a premium chimney liner solution designed for wood stoves, pellet stoves, and gas appliances. Engineered with a high-performance smooth interior surface, this smoothwall chimney liner kit significantly reduces airflow resistance, improving draft efficiency and overall heating performance for safer, more reliable operation.\u003c\/p\u003e\n\u003cp\u003eIdeal for chimney relining projects, this standard smoothwall liner kit enhances appliance efficiency by promoting consistent exhaust flow and reducing buildup risks. Its advanced design supports improved combustion and long-term durability, making it a dependable choice for homeowners and professionals seeking a high-quality stainless steel chimney liner system. Perfect for upgrading existing chimneys, it ensures optimized ventilation and superior performance across multiple heating applications.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003ePremium 316L Stainless Steel Chimney Liner Construction\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Built with durable \u003c\/span\u003e2-ply 316L stainless steel, this smoothwall chimney liner kit delivers exceptional corrosion resistance, strength, and long-term reliability for chimney relining systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eUL 1777 Listed All-Fuel Chimney Liner Kit\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Fully tested and certified to \u003c\/span\u003eUL 1777 standards, ensuring safe and compliant performance for wood, oil, coal, and gas appliances in residential and professional installations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eHigh BTU Capacity Performance Design\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Engineered to handle higher heat output than traditional corrugated liners, making it ideal for \u003c\/span\u003ehigh-efficiency chimney venting systems and demanding heating applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eSmooth Interior for Maximum Airflow Efficiency\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Advanced \u003c\/span\u003esmoothwall liner design reduces airflow drag by up to 20%\u003cspan\u003e, improving draft performance and enhancing overall appliance efficiency.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eComplete Chimney Liner Installation Kit\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Includes a \u003c\/span\u003estainless steel liner, rain cap, 13” x 13” top plate, and tee with removable snout, providing a full chimney relining solution for easy installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eFlexible \u0026amp; Easy to Install Chimney Liner System\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Designed for superior flexibility, allowing smooth navigation through offsets and tight masonry chimneys during\u003cstrong\u003e \u003c\/strong\u003e\u003c\/span\u003echimney liner installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eEnhanced Draft \u0026amp; Heat Efficiency\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Provides better airflow and heat retention compared to standard corrugated liners, improving the performance of your \u003c\/span\u003ewood stove or gas fireplace system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eCompatible with All Fuel Types\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Suitable for \u003c\/span\u003ewood-burning stoves, pellet stoves, oil furnaces, coal systems, and gas appliances, offering versatile all-fuel chimney liner compatibility.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eDurable 2-Ply Corrosion-Resistant Design\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Engineered for long-lasting use in harsh chimney environments, resisting moisture, creosote, and acidic flue gases.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eAvailable Size Options for Flexible Installation\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Offered in \u003c\/span\u003e6-inch diameter with 25-foot and 35-foot lengths, making it suitable for a wide range of chimney liner replacement projects.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLiner Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSmoothwall, 2-ply 316L Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDiameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAvailable Lengths\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e25 feet, 35 feet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUL Listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUL 1777 Certified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBTU Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHigher than standard corrugated liners\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFlexibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHigh flexibility for easy installation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eKit Includes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e13” x 13” top plate, rain cap, tee with removable snout\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFuel Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWood, oil, coal, gas, and pellet appliances\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLimited Lifetime Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDocuments \u0026amp; Files\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0780\/6926\/8771\/files\/SmoothwallLiner_Brochure_MFlex.pdf?v=1781601228\" target=\"_blank\"\u003eProduct Brochure\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0780\/6926\/8771\/files\/CB-AL-Install.pdf?v=1781595640\" target=\"_blank\"\u003eInstallation Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"National Chimney","offers":[{"title":"25 Foot","offer_id":55239774208291,"sku":"SW625KIT","price":1269.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0780\/6926\/8771\/files\/National-Chimney-Smoothwall-Standard-Liner-Kit-with-Tee-_-6-Inch-National-Chimney-Dreamwood-Living-233673258.jpg?v=1783013434"},{"product_id":"national-chimney-m-flex-pre-insulated-wood-burning-insert-liner-kit","title":"National Chimney M-Flex Pre-Insulated Wood-Burning Insert Liner Kit","description":"\u003ch3 style=\"text-align: center;\"\u003eNational Chimney M-Flex Pre-Insulated Wood-Burning Insert Liner Kit\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eNational Chimney M-Flex Pre-Insulated Wood-Burning Insert Liner Kit\u003c\/strong\u003e, a premium chimney relining solution designed for wood stoves and fireplace inserts. This high-performance pre-insulated chimney liner kit is engineered to improve draft efficiency, enhance safety, and deliver consistent venting performance for demanding residential heating applications.\u003c\/p\u003e\n\u003cp\u003eBuilt with a durable 316L stainless steel inner liner and a protective aluminum outer casing, this insulated chimney liner system ensures excellent heat retention and long-lasting corrosion resistance. Ideal for wood-burning insert installations, it supports high-temperature operation while improving overall chimney efficiency. Easy to install and built for reliability, this wood stove chimney liner kit is the perfect upgrade for safer, more efficient, and professional-grade venting performance.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003ePre-Insulated Chimney Liner for Maximum Efficiency\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Featuring \u003c\/span\u003e1\/2\" thick pre-insulation, this pre-insulated chimney liner kit reduces condensation, improves draft performance, and enhances overall wood-burning stove efficiency while minimizing creosote buildup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eUL 1777 Listed All-Fuel Chimney Liner System\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Certified for safe operation with \u003c\/span\u003ewood, coal, oil, gas, and pellet appliances, ensuring reliable performance in all all-fuel chimney venting applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003ePremium 316L Stainless Steel Inner Liner\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Constructed from mill-certified \u003c\/span\u003e316L stainless steel, this chimney liner system delivers exceptional corrosion resistance, high-heat durability, and long-term reliability for chimney relining projects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eFlexible Aluminum Outer Casing\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Lightweight and highly flexible, the \u003c\/span\u003ealuminum outer shell chimney liner\u003cspan\u003e allows easier handling and installation, especially in tight or offset chimney spaces.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eEnhanced Draft \u0026amp; Reduced Creosote Formation\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Insulated design maintains consistent flue temperatures, improving \u003c\/span\u003echimney draft efficiency\u003cspan\u003e and reducing dangerous creosote accumulation for safer operation.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eComplete Chimney Liner Installation Kit\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Includes a \u003c\/span\u003estove adapter, rain cap, and 13” x 13” top plate, providing a full chimney relining kit\u003cspan\u003e for quick and professional installation.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eOptimized for Wood-Burning Insert Applications\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Specifically engineered for \u003c\/span\u003ewood stove and fireplace insert installations\u003cspan\u003e, delivering improved combustion performance and heating efficiency.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eAvailable in Standard Length Options\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Offered in \u003c\/span\u003e25 ft and 35 ft lengths, making it suitable for most residential chimney liner replacement projects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eHigh Flexibility for Easy Installation\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Designed to navigate offsets and existing masonry chimneys with ease, reducing installation time and complexity.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eTransferable Lifetime Warranty Protection\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Backed by a \u003c\/span\u003elifetime transferable warranty\u003cspan\u003e, ensuring long-term confidence and dependable performance.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eDiameter*\u003c\/th\u003e\n\u003cth\u003eLength\u003c\/th\u003e\n\u003cth\u003eInner Material\u003c\/th\u003e\n\u003cth\u003eOuter Material\u003c\/th\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e6\"\u003c\/td\u003e\n\u003ctd\u003e25'\u003c\/td\u003e\n\u003ctd\u003e316L Stainless Steel\u003c\/td\u003e\n\u003ctd\u003eAluminum\u003c\/td\u003e\n\u003ctd\u003eCBP625KIT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e6\"\u003c\/td\u003e\n\u003ctd\u003e35'\u003c\/td\u003e\n\u003ctd\u003e316L Stainless Steel\u003c\/td\u003e\n\u003ctd\u003eAluminum\u003c\/td\u003e\n\u003ctd\u003eCBP635KIT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e7\"\u003c\/td\u003e\n\u003ctd\u003e25'\u003c\/td\u003e\n\u003ctd\u003e316L Stainless Steel\u003c\/td\u003e\n\u003ctd\u003eAluminum\u003c\/td\u003e\n\u003ctd\u003eCBP725KIT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e7\"\u003c\/td\u003e\n\u003ctd\u003e35'\u003c\/td\u003e\n\u003ctd\u003e316L Stainless Steel\u003c\/td\u003e\n\u003ctd\u003eAluminum\u003c\/td\u003e\n\u003ctd\u003eCBP735KIT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e8\"\u003c\/td\u003e\n\u003ctd\u003e25'\u003c\/td\u003e\n\u003ctd\u003e316L Stainless Steel\u003c\/td\u003e\n\u003ctd\u003eAluminum\u003c\/td\u003e\n\u003ctd\u003eCBP825KIT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e8\"\u003c\/td\u003e\n\u003ctd\u003e35'\u003c\/td\u003e\n\u003ctd\u003e316L Stainless Steel\u003c\/td\u003e\n\u003ctd\u003eAluminum\u003c\/td\u003e\n\u003ctd\u003eCBP835KIT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eAdd additional 1-inch to compensate for 1\/2\" thickness of insulation.\u003c\/p\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLimited Lifetime Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDocuments \u0026amp; Files\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0780\/6926\/8771\/files\/SmoothwallLiner_Brochure_MFlex.pdf?v=1781601228\" target=\"_blank\"\u003eProduct Brochure\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0780\/6926\/8771\/files\/CB-AL-Install.pdf?v=1781595640\" target=\"_blank\"\u003eInstallation Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"National Chimney","offers":[{"title":"25 Foot","offer_id":55239782793507,"sku":"DBP625BK","price":1429.68,"currency_code":"USD","in_stock":true},{"title":"35 Foot","offer_id":55239786070307,"sku":"DBP635BK","price":1825.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0780\/6926\/8771\/files\/National-Chimney-M-Flex-Pre-Insulated-Wood-Burning-Insert-Liner-Kit-National-Chimney-Dreamwood-Living-233673479.jpg?v=1783013442"},{"product_id":"national-chimney-m-flex-6-inch-pre-insulated-standard-liner-kit-with-tee","title":"National Chimney M-Flex 6-Inch Pre-Insulated Standard Liner Kit with Tee","description":"\u003ch3 style=\"text-align: center;\"\u003eNational Chimney M-Flex 6-Inch Pre-Insulated Standard Liner Kit with Tee\u003c\/h3\u003e\n\u003cdiv class=\"wpb_text_column wpb_content_element\"\u003e\n\u003cdiv class=\"wpb_wrapper\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eNational Chimney M-Flex 6-Inch Pre-Insulated Standard Liner Kit with Tee\u003c\/strong\u003e, a premium chimney relining solution designed for improved safety, efficiency, and performance. This pre-insulated chimney liner kit with tee enhances draft stability while reducing heat loss and condensation, making it ideal for demanding wood stove and fireplace insert applications. Its flexible design ensures smooth installation in existing masonry chimneys.\u003c\/p\u003e\n\u003cp\u003eBuilt with a corrosion-resistant 316L stainless steel inner liner and a durable aluminum outer casing, this 6-inch insulated chimney liner system delivers long-lasting reliability and high-temperature performance. Engineered for easy installation and superior venting efficiency, it provides a dependable solution for homeowners seeking a professional-grade chimney liner kit with tee. Perfect for enhancing chimney safety, airflow, and overall heating system efficiency.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003ePre-Insulated Chimney Liner for Maximum Efficiency\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – This \u003c\/span\u003e6-inch pre-insulated chimney liner kit includes ½-inch insulation, eliminating the need for additional wrap while improving chimney draft efficiency\u003cspan\u003e, heat retention, and reducing condensation buildup.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eUL 1777 Listed All-Fuel Chimney Liner Kit\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Fully certified for safe use with \u003c\/span\u003ewood, oil, coal, gas, and pellet appliances, ensuring reliable performance in all all-fuel chimney venting systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003ePremium 316L Stainless Steel Inner Liner\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Constructed from mill-certified \u003c\/span\u003e316L stainless steel, this chimney liner system offers exceptional corrosion resistance, high-temperature durability, and long-lasting reliability for chimney relining projects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eLightweight Aluminum Outer Casing\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Designed with a flexible \u003c\/span\u003ealuminum outer shell, this insulated chimney liner kit allows for easier handling and installation in tight or offset chimney spaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eTwo-Part Tee with Removable Snout\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Includes a \u003c\/span\u003e10-inch removable snout chimney tee, providing easy appliance connection, simplified cleaning access, and improved maintenance convenience for chimney inspection and servicing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eEnhanced Draft \u0026amp; Condensation Control\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Pre-insulated design helps stabilize flue temperatures, improving\u003cstrong\u003e \u003c\/strong\u003e\u003c\/span\u003echimney performance\u003cspan\u003e, reducing creosote formation, and increasing overall system efficiency.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eFlexible Installation for Tight Chimneys\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Engineered for smooth navigation through existing masonry chimneys, making it ideal for \u003c\/span\u003echimney liner installation and relining applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eAvailable Length Options for Versatile Installations\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Offered in \u003c\/span\u003e25-foot and 35-foot lengths, suitable for a wide range of residential chimney liner replacement projects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eOptimized for Professional \u0026amp; DIY Installation\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Designed for quick setup with fewer components required, making it a dependable \u003c\/span\u003epre-insulated chimney liner kit for homeowners and contractors alike.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cdiv class=\"wpb_text_column wpb_content_element\"\u003e\n\u003cdiv class=\"wpb_wrapper\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNational Chimney\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eM-Flex Pre-Insulated Standard Liner Kit with Tee\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLiner Inner Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e316L Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOuter Casing Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInsulation Thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e½ inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLiner Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAvailable Lengths\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e25 feet, 35 feet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUL Listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUL 1777 Listed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFuel Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWood, Oil, Coal, Gas\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTee Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTwo-Part Tee with Removable Snout\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLifetime Transferable Warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"text-align: left;\"\u003eWarranty\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLimited Lifetime Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDocuments \u0026amp; Files\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0780\/6926\/8771\/files\/PreInsulated_Brochure_MFlex.pdf?v=1781602997\" rel=\"noopener\" target=\"_blank\"\u003eProduct Brochure\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0780\/6926\/8771\/files\/DB-Install.pdf?v=1781602995\" rel=\"noopener\" target=\"_blank\"\u003eInstallation Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"National Chimney","offers":[{"title":"25 Foot","offer_id":55239787413795,"sku":"DBP625KIT","price":1496.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0780\/6926\/8771\/files\/National-Chimney-M-Flex-6-Inch-Pre-Insulated-Standard-Liner-Kit-with-Tee-National-Chimney-Dreamwood-Living-233673981.jpg?v=1783013448"},{"product_id":"national-chimney-m-flex-chimney-liner-6-inch","title":"National Chimney M-Flex Chimney Liner | 6-Inch","description":"\u003ch3 style=\"text-align: center;\"\u003eNational Chimney M-Flex Chimney Liner | 6-Inch\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eNational Chimney M-FLEX 6-Inch Stainless Steel Chimney Liner\u003c\/strong\u003e, a premium solution designed for chimney relining and new construction installations. Engineered for superior performance, this 6-inch flexible chimney liner delivers excellent draft efficiency, improved airflow, and reliable venting for wood stoves, fireplaces, and insert applications.\u003c\/p\u003e\n\u003cp\u003eBuilt for long-lasting durability, this stainless steel chimney liner system combines strength and flexibility to navigate existing chimney structures with ease. Ideal for homeowners and professionals, the National Chimney M-FLEX liner kit ensures safe, efficient exhaust flow while resisting corrosion and high-temperature conditions. Perfect for upgrading aging chimneys, it provides a dependable chimney venting solution that enhances heating efficiency and overall system performance.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003ePremium 316L Stainless Steel Chimney Liner Construction\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Manufactured from high-grade \u003c\/span\u003e.006” thick 316L stainless steel, this 6-inch chimney liner\u003cspan\u003e delivers exceptional durability, corrosion resistance, and protection against creosote buildup for long-lasting chimney performance.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eUL 1777 Listed All-Fuel Chimney Liner System\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Fully tested and certified under \u003c\/span\u003eUL 1777, UL 64, and UL 441 standards, ensuring safe and reliable venting for wood, pellet, coal, oil, gas, and corn-burning appliances.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eFlexible Chimney Liner for Easy Installation\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Designed with a \u003c\/span\u003e7-ply interlocked and crimped construction, this flexible chimney liner kit easily navigates tight bends, offsets, and existing masonry chimney structures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eGas and Watertight Sealing Technology\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Engineered to create a secure \u003c\/span\u003eairtight and watertight chimney seal\u003cspan\u003e, supporting thermal expansion and contraction while maintaining optimal venting efficiency.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eHigh-Performance Chimney Relining Solution\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Ideal for \u003c\/span\u003echimney relining projects\u003cspan\u003e, improving draft performance, enhancing airflow, and ensuring safer exhaust gas evacuation in residential heating systems.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eEnhanced Draft \u0026amp; Venting Efficiency\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Optimizes chimney airflow to improve appliance efficiency and reduce buildup, making it a reliable \u003c\/span\u003estainless steel chimney venting system\u003cspan\u003e for modern homes.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eSuperior Flexibility for Tight Chimney Spaces\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – The corrugated flexible design allows for smooth installation through narrow or offset chimneys, reducing installation time and effort.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eLifetime Transferable Warranty Protection\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Backed by a \u003c\/span\u003elifetime transferable warranty\u003cspan\u003e when professionally installed and maintained, ensuring long-term confidence and product reliability.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNational Chimney\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eM-FLEX Stainless Steel Chimney Liner\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e316L Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSteel Thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e.006 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDiameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAvailable Lengths\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e25 ft, 50 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConstruction\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCorrugated, 7-ply interlocked and crimped\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUL Certification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUL 1777, UL 64, UL 441\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFuel Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWood, Oil, Coal, Gas, Pellet, Corn\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLifetime Transferable Warranty (Professional Maintenance Required)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLimited Lifetime Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDocuments \u0026amp; Files\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0780\/6926\/8771\/files\/MflexLiner_Brochure_MFlex_3a9387ea-7313-4eab-a55b-61c906a38b6c.pdf?v=1781605447\" target=\"_blank\" rel=\"noopener\"\u003eProduct Brochure\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0780\/6926\/8771\/files\/DB-Install.pdf?v=1781602995\" target=\"_blank\"\u003eInstallation Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"National Chimney","offers":[{"title":"50 Foot","offer_id":55239821230371,"sku":"CB650","price":1369.22,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0780\/6926\/8771\/files\/National-Chimney-M-Flex-Chimney-Liner-_-6-Inch-National-Chimney-Dreamwood-Living-233674391.png?v=1783013454"},{"product_id":"national-chimney-premier-flex-lite-304-stainless-steel-flexible-chimney-liner","title":"National Chimney Premier Flex Lite 304 Stainless Steel Flexible Chimney Liner","description":"\u003ch3 style=\"text-align: center;\"\u003eNational Chimney Premier Flex Lite 304 Stainless Steel Flexible Chimney Liner\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eNational Chimney Premier Flex Lite 304 Stainless Steel Flexible Chimney Liner\u003c\/strong\u003e, a reliable chimney relining solution designed for wood-burning stoves and fireplaces. Engineered for durability and performance, this 304 stainless steel chimney liner delivers dependable heat resistance and corrosion protection while maintaining a lightweight structure for easier installation in existing masonry chimneys.\u003c\/p\u003e\n\u003cp\u003eIdeal for both homeowners and professionals, this flexible chimney liner kit offers smooth airflow and improved draft efficiency for safer and more effective heating performance. The Premier Flex Lite chimney liner is designed to simplify installation while ensuring long-lasting reliability in demanding conditions. Perfect for wood stove chimney upgrades and fireplace insert installations, it provides a cost-effective and durable stainless steel chimney venting solution for modern heating systems.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eUltra-Lightweight 304 Stainless Steel Chimney Liner\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Constructed from premium\u003cstrong\u003e \u003c\/strong\u003e\u003c\/span\u003e.010” thick 304 stainless steel, this flexible chimney liner kit\u003cspan\u003e delivers excellent durability while significantly reducing weight for easier handling and installation.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eEasy Installation Chimney Liner System\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Designed for fast and efficient setup, the \u003c\/span\u003ePremier Flex Lite chimney liner\u003cspan\u003e is ideal for navigating tight bends and offsets in existing masonry chimneys.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eUL Certified Safe Venting Solution\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Tested and approved under \u003c\/span\u003eUL 1777 and ULC-S635 standards, ensuring safe and reliable performance for wood-burning and pellet stove venting systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eOptimized for Wood \u0026amp; Pellet Appliances\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Specifically engineered for \u003c\/span\u003ewood stoves and pellet stove chimney relining, providing consistent airflow, improved draft, and efficient heating performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eHigh-Flexibility Chimney Relining Design\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – The lightweight, flexible construction makes it ideal for complex chimney configurations, reducing installation difficulty in \u003c\/span\u003echimney relining projects\u003cspan\u003e.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003ePremium 304 Stainless Steel Construction\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Built for long-term reliability, offering corrosion resistance, heat durability, and strong performance in demanding residential heating environments.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eAvailable in Multiple Sizes for Versatility\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Offered in \u003c\/span\u003e6” and 8” diameters with lengths of 15’, 25’, 35’, and 50’, suitable for a wide range of chimney liner replacement applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eEnhanced Safety \u0026amp; Draft Performance\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Improves chimney airflow efficiency while maintaining safe venting conditions for consistent appliance operation.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eLightweight Design for Reduced Installation Effort\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – The ultra-light construction allows for easier transport, positioning, and installation compared to standard chimney liners.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eLifetime Transferable Residential Warranty\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Backed by a \u003c\/span\u003elifetime transferable warranty for residential use and a 25-year commercial warranty, ensuring long-term confidence and reliability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e304 Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e.010\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFuel Types\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWood, Pellet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDiameters Available\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6-Inch, 8-Inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLengths Available\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e15 ft, 25 ft, 35 ft, 50 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShape\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRound\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUL Listings\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUL 1777, ULC-S635\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLifetime Transferable (Residential), 25-Year (Commercial)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLimited Lifetime Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDocuments \u0026amp; Files\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0780\/6926\/8771\/files\/Premier_Flex_Lite_Brochure.pdf?v=1781605953\" target=\"_blank\" rel=\"noopener\"\u003eProduct Brochure\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"National Chimney","offers":[{"title":"6 Inch \/ 15 Foot","offer_id":55239826047267,"sku":"PRL615","price":536.32,"currency_code":"USD","in_stock":true},{"title":"6 Inch \/ 25 Foot","offer_id":55239828799779,"sku":"PRL625","price":893.8,"currency_code":"USD","in_stock":true},{"title":"6 Inch \/ 50 Foot","offer_id":55239828865315,"sku":"PRL650","price":1787.56,"currency_code":"USD","in_stock":true},{"title":"8 Inch \/ 15 Foot","offer_id":55239828767011,"sku":"PRL815","price":819.5,"currency_code":"USD","in_stock":true},{"title":"8 Inch \/ 25 Foot","offer_id":55239828832547,"sku":"PRL825","price":1365.9,"currency_code":"USD","in_stock":true},{"title":"8 Inch \/ 50 Foot","offer_id":55239828898083,"sku":"PRL850","price":2731.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0780\/6926\/8771\/files\/National-Chimney-Premier-Flex-Lite-304-Stainless-Steel-Flexible-Chimney-Liner-National-Chimney-Dreamwood-Living-233674475.jpg?v=1783013464"},{"product_id":"national-chimney-flexible-chimney-liner-insulation-kit","title":"National Chimney Flexible Chimney Liner Insulation Kit","description":"\u003ch3 style=\"text-align: center;\"\u003eNational Chimney Flexible Chimney Liner Insulation Kit\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eNational Chimney Flexible Chimney Liner Insulation Kit\u003c\/strong\u003e, a premium chimney insulation solution designed to improve safety, efficiency, and performance for wood, pellet, coal, gas, and oil heating appliances. This high-quality chimney liner insulation wrap kit helps maintain stable flue temperatures, enhancing draft efficiency and supporting cleaner, more reliable combustion.\u003c\/p\u003e\n\u003cp\u003eAvailable in ¼-inch and ½-inch insulation thickness options, this flexible chimney liner insulation system is engineered to reduce condensation buildup and minimize creosote formation inside the chimney. Ideal for chimney relining projects and stainless steel liner installations, it improves overall heating system performance while extending chimney life. Perfect for homeowners and professionals seeking a dependable chimney insulation kit for all-fuel venting systems.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eHigh-Performance Ceramic Blanket Chimney Insulation\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Made with \u003c\/span\u003e8 lb density ceramic blanket insulation, this flexible chimney liner insulation kit delivers superior heat retention, durability, and long-term chimney protection for all-fuel venting systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eFoil-Backed Heat Reflective Design\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Features a \u003c\/span\u003e4 ml foil backing that enhances heat reflection, improves chimney draft efficiency\u003cspan\u003e, and helps maintain consistent flue temperatures.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eImproved Draft Performance \u0026amp; Creosote Reduction\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Engineered to stabilize chimney temperatures, this \u003c\/span\u003echimney liner insulation wrap kit reduces condensation buildup and minimizes dangerous creosote formation\u003cspan\u003e for safer operation.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eComplete Chimney Insulation Installation Kit\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Includes \u003c\/span\u003ePremier Wrap insulation, stainless steel mesh, mesh clamps, foil tape, and adhesive spray, providing a full chimney liner insulation system\u003cspan\u003e for easy installation.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eOptimized for All-Fuel Chimney Applications\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Suitable for \u003c\/span\u003ewood, coal, pellet, gas, and oil heating appliances, ensuring reliable performance across multiple chimney venting systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eZero-Clearance \u0026amp; Reduced Clearance Options\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Available in \u003c\/span\u003e¼” and ½” insulation thickness\u003cspan\u003e, offering flexible installation options for both tight and standard chimney configurations.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eEasy Installation Chimney Liner Insulation System\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Designed for simple application with included accessories, making it ideal for both professional installers and DIY \u003c\/span\u003echimney relining projects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eCSIA Accepted Safety Certified Product\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Meets \u003c\/span\u003eChimney Safety Institute of America (CSIA) standards\u003cspan\u003e, ensuring safe and compliant installation practices.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eCompatible with UL-Listed Chimney Liner Systems\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Designed to integrate seamlessly with \u003c\/span\u003eUL-listed chimney liners\u003cspan\u003e, meeting industry safety and performance requirements.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eFlexible Fit for Multiple Chimney Sizes\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Compatible with \u003c\/span\u003e3” to 8” chimney liners\u003cspan\u003e, available in various widths and lengths for versatile installation needs.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eInsulation Thickness\u003c\/th\u003e\n\u003cth\u003eRoll Width\u003c\/th\u003e\n\u003cth\u003eLength\u003c\/th\u003e\n\u003cth\u003eLiner Size Compatibility\u003c\/th\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e¼” (1” clearance)\u003c\/td\u003e\n\u003ctd\u003e24”\u003c\/td\u003e\n\u003ctd\u003e25’\u003c\/td\u003e\n\u003ctd\u003e3” - 6” liners\u003c\/td\u003e\n\u003ctd\u003ePW46KIT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e¼” (1” clearance)\u003c\/td\u003e\n\u003ctd\u003e24”\u003c\/td\u003e\n\u003ctd\u003e35’\u003c\/td\u003e\n\u003ctd\u003e3” - 6” liners\u003c\/td\u003e\n\u003ctd\u003ePW4635KIT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e¼” (1” clearance)\u003c\/td\u003e\n\u003ctd\u003e30”\u003c\/td\u003e\n\u003ctd\u003e25’\u003c\/td\u003e\n\u003ctd\u003e7” - 8” liners\u003c\/td\u003e\n\u003ctd\u003ePW478KIT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e¼” (1” clearance)\u003c\/td\u003e\n\u003ctd\u003e30”\u003c\/td\u003e\n\u003ctd\u003e35’\u003c\/td\u003e\n\u003ctd\u003e7” - 8” liners\u003c\/td\u003e\n\u003ctd\u003ePW47835KIT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e½” (Zero clearance)\u003c\/td\u003e\n\u003ctd\u003e24”\u003c\/td\u003e\n\u003ctd\u003e25’\u003c\/td\u003e\n\u003ctd\u003e3” - 6” liners\u003c\/td\u003e\n\u003ctd\u003ePW26KIT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e½” (Zero clearance)\u003c\/td\u003e\n\u003ctd\u003e24”\u003c\/td\u003e\n\u003ctd\u003e35’\u003c\/td\u003e\n\u003ctd\u003e3” - 6” liners\u003c\/td\u003e\n\u003ctd\u003ePW2635KIT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e½” (Zero clearance)\u003c\/td\u003e\n\u003ctd\u003e30”\u003c\/td\u003e\n\u003ctd\u003e25’\u003c\/td\u003e\n\u003ctd\u003e7” - 8” liners\u003c\/td\u003e\n\u003ctd\u003ePW278KIT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e½” (Zero clearance)\u003c\/td\u003e\n\u003ctd\u003e30”\u003c\/td\u003e\n\u003ctd\u003e35’\u003c\/td\u003e\n\u003ctd\u003e7” - 8” liners\u003c\/td\u003e\n\u003ctd\u003ePW27835KIT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLimited Lifetime Warranty\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"National Chimney","offers":[{"title":"3 Inch to - 6 Inch \/ 24 Inch x 25 Foot \/ 1\/4\" Thickness (1 Clearance)","offer_id":55239862026531,"sku":"PW46KIT","price":345.44,"currency_code":"USD","in_stock":true},{"title":"3 Inch to - 6 Inch \/ 24 Inch x 25 Foot \/ 1\/2\" Thickness (Zero-Clearance)","offer_id":55239831781667,"sku":"PW26KIT","price":382.24,"currency_code":"USD","in_stock":true},{"title":"3 Inch to - 6 Inch \/ 24 Inch x 35 Foot \/ 1\/4\" Thickness (1 Clearance)","offer_id":55249278402851,"sku":"PW4635KIT","price":442.4,"currency_code":"USD","in_stock":true},{"title":"3 Inch to - 6 Inch \/ 24 Inch x 35 Foot \/ 1\/2\" Thickness (Zero-Clearance)","offer_id":55249278435619,"sku":"PW2635KIT","price":553.44,"currency_code":"USD","in_stock":true},{"title":"7 Inch to - 8 Inch \/ 30 Inch x 25 Foot \/ 1\/4\" Thickness (1 Clearance)","offer_id":55249278599459,"sku":"PW478KIT","price":471.94,"currency_code":"USD","in_stock":true},{"title":"7 Inch to - 8 Inch \/ 30 Inch x 25 Foot \/ 1\/2\" Thickness (Zero-Clearance)","offer_id":55249278632227,"sku":"PW278KIT","price":602.34,"currency_code":"USD","in_stock":true},{"title":"7 Inch to - 8 Inch \/ 30 Inch x 35 Foot \/ 1\/4\" Thickness (1 Clearance)","offer_id":55239862190371,"sku":"PW47835KIT","price":614.98,"currency_code":"USD","in_stock":true},{"title":"7 Inch to - 8 Inch \/ 30 Inch x 35 Foot \/ 1\/2\" Thickness (Zero-Clearance)","offer_id":55239862157603,"sku":"PW27835KIT","price":796.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0780\/6926\/8771\/files\/National-Chimney-Flexible-Chimney-Liner-Insulation-Kit-National-Chimney-Dreamwood-Living-233674584.jpg?v=1783013472"},{"product_id":"national-chimney-offset-insert-adapter-6-inch","title":"National Chimney Offset Insert Adapter | 6-Inch","description":"\u003ch3 style=\"text-align: center;\"\u003eNational Chimney Offset Insert Adapter | 6-Inch\u003c\/h3\u003e\n\u003cp\u003eThe National Chimney 6-Inch Offset Insert Adapter, a reliable chimney offset adapter designed for wood stoves and fireplace insert installations. Engineered to improve alignment between the appliance and chimney liner, this 6-inch offset chimney adapter provides a clean, efficient venting solution while maintaining optimal draft performance and safety.\u003c\/p\u003e\n\u003cp\u003eFeaturing a durable sliding two-piece design, this wood stove insert adapter allows flexible venting adjustments without the need for additional elbows, simplifying installation in tight or misaligned setups. Ideal for chimney relining and insert venting systems, it ensures a secure, precise connection for long-lasting performance. The National Chimney offset insert adapter delivers dependable airflow control and professional-grade reliability for modern heating applications.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eAdjustable 6-Inch Chimney Offset Insert Adapter\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Provides a flexible \u003c\/span\u003e0” to 9” offset range, making this chimney insert adapter ideal for tight or misaligned wood stove and fireplace insert installations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eDurable 304 Stainless Steel Construction\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Built from heavy-duty \u003c\/span\u003e24-gauge 304 stainless steel, ensuring long-lasting strength, corrosion resistance, and reliable performance in chimney venting systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eSliding Two-Piece Offset Design\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Features a \u003c\/span\u003etwo-piece sliding construction that allows precise horizontal adjustment without requiring additional elbow fittings, simplifying chimney liner installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eVersatile Chimney Liner Compatibility\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Designed to connect with \u003c\/span\u003eOD flex liners, rigid chimney pipe, and ID pipe systems, offering broad compatibility for wood stove chimney venting setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eSecure and Stable Connection System\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Installs easily using standard screws or rivets, ensuring a tight, professional-grade fit for \u003c\/span\u003echimney relining and insert adapter applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eHorizontal Vent Positioning Flexibility\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Allows both front-to-back and side-to-side adjustment for optimal alignment in challenging chimney configurations.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eCSIA Certified Chimney Adapter\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Approved by the \u003c\/span\u003eChimney Safety Institute of America (CSIA)\u003cspan\u003e for safe and compliant installation in residential heating systems.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eFast and Simple Installation Process\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Designed for easy mounting using standard fasteners, reducing installation time and improving efficiency for contractors and homeowners.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eIdeal for Tight Chimney Installations\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Eliminates the need for elbows, making it a perfect \u003c\/span\u003e6-inch offset chimney adapter for confined spaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eProfessional-Grade Chimney Venting Solution\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Ensures stable airflow, improved draft alignment, and reliable performance for\u003cstrong\u003e \u003c\/strong\u003e\u003c\/span\u003ewood stoves and fireplace inserts\u003cspan\u003e.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNational Chimney\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNC6IA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePipe Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOffset Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0” to 9”\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24-gauge 304 stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTop Collar Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAccepts OD flex liner or rigid pipe, ID pipe with coupler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBottom Collar Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFits most stoves requiring a crimped connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInstallation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAttaches with screws or rivets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCertifications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCSIA Approved\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUse Case\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFireplace inserts, wood stove venting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLimited Lifetime Warranty\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"National Chimney","offers":[{"title":"Default Title","offer_id":55239842398499,"sku":"NC6IA","price":240.86,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0780\/6926\/8771\/files\/National-Chimney-Offset-Insert-Adapter-_-6-Inch-National-Chimney-Dreamwood-Living-233716625.jpg?v=1783013481"},{"product_id":"national-chimney-stove-adapter","title":"National Chimney Stove Adapter","description":"\u003ch3 style=\"text-align: center;\"\u003eNational Chimney Stove Adapter\u003c\/h3\u003e\n\u003cp\u003eThe National Chimney Stove Adapter, a high-performance chimney stove adapter designed to create a secure and seamless connection between your stove’s flue outlet and the chimney venting system. Engineered for improved safety and efficiency, this stove pipe adapter helps ensure proper airflow, stable draft performance, and reliable exhaust flow for wood stoves and fireplace inserts.\u003c\/p\u003e\n\u003cp\u003eIdeal for modern wood stove venting systems, the National Chimney stove adapter enhances installation precision while supporting long-term durability and consistent operation. Its robust design reduces the risk of leaks and misalignment, making it a dependable solution for chimney relining and stove installation projects. Perfect for homeowners and professionals, it delivers a safe, efficient, and long-lasting stainless steel stove venting connection.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003ePrecision-Fit Chimney Stove Adapter Design\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Engineered to fit securely into the appliance’s flue outlet, this \u003c\/span\u003estove adapter for chimney liners ensures a tight, leak-resistant connection for improved safety and efficiency.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eAvailable in 6-Inch and 8-Inch Sizes\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Designed to accommodate standard \u003c\/span\u003ewood stove and fireplace insert venting systems, offering flexible sizing for various chimney installation applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eDurable 304 Stainless Steel Construction\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Manufactured from heavy-duty \u003c\/span\u003e24-gauge 304 stainless steel, this chimney stove adapter delivers long-lasting corrosion resistance and high-heat durability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eIdeal for M-FLEX Chimney Liner Connections\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Specifically designed for connecting \u003c\/span\u003eM-FLEX flexible chimney liners to stoves\u003cspan\u003e, ensuring a secure and stable venting system.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eCrimped-End Secure Connection System\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Features a crimped end that fits tightly into most stove collars, reducing air leakage and improving \u003c\/span\u003echimney draft performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eCompatible with Rigid \u0026amp; Flexible Liners\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Supports both \u003c\/span\u003erigid chimney pipe and flexible stainless steel liners, making it a versatile chimney venting adapter solution.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eEasy Chimney Installation Process\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Can be secured using self-tapping screws or rivets (not included), allowing fast and reliable installation for professionals and DIY users.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eCorrosion-Resistant High-Heat Performance\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Built for demanding environments, ensuring durability in continuous high-temperature \u003c\/span\u003ewood stove venting systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eCSIA Certified Safety Approval\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Recognized by the\u003cstrong\u003e \u003c\/strong\u003e\u003c\/span\u003eChimney Safety Institute of America (CSIA)\u003cspan\u003e for improved safety and compliance in residential chimney installations.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eEnhanced Airflow \u0026amp; Leak Prevention\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Precision engineering reduces air leaks and improves overall chimney efficiency for safer, cleaner combustion.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003e6-Inch Model\u003c\/th\u003e\n\u003cth\u003e8-Inch Model\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInside Diameter (ID)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6⅜”\u003c\/td\u003e\n\u003ctd\u003e8⅜”\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutside Diameter (OD)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5 15\/16”\u003c\/td\u003e\n\u003ctd\u003e7 15\/16”\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24ga 304 Stainless Steel\u003c\/td\u003e\n\u003ctd\u003e24ga 304 Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCollar Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCrimped for a snug fit\u003c\/td\u003e\n\u003ctd\u003eCrimped for a snug fit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInstallation Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eScrews or rivets\u003c\/td\u003e\n\u003ctd\u003eScrews or rivets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOffset Adjustment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6” – 12”\u003c\/td\u003e\n\u003ctd\u003e7” – 12”\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUsage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWood, pellet, and gas stoves\u003c\/td\u003e\n\u003ctd\u003eWood, pellet, and gas stoves\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLimited Lifetime Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"National Chimney","offers":[{"title":"Default Title","offer_id":55239851376931,"sku":"NC6SA","price":42.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0780\/6926\/8771\/files\/National-Chimney-Stove-Adapter-National-Chimney-Dreamwood-Living-233675115.jpg?v=1783013488"},{"product_id":"national-chimney-insert-boot","title":"National Chimney Insert Boot","description":"\u003ch3 style=\"text-align: center;\"\u003eNational Chimney Insert Boot\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eNational Chimney Insert Boot\u003c\/strong\u003e is a durable \u003cstrong\u003estainless steel insert adapter\u003c\/strong\u003e designed to create a secure connection between a chimney liner and fireplace insert exhaust vent. Manufactured from premium 24-gauge 304 stainless steel, it offers excellent corrosion resistance, strength, and long-term performance for chimney relining and venting applications.\u003c\/p\u003e\n\u003cp\u003eEngineered for compatibility with most fireplace inserts, this chimney insert boot easily attaches to rigid pipe or flexible chimney liner systems using a coupler. Ideal for wood, pellet, and other insert installations, it provides a reliable transition point that helps ensure safe, efficient exhaust venting and professional-grade chimney system performance.\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0780\/6926\/8771\/files\/Screenshot_2026-06-18_161950_1024x1024.png?v=1781779981\" style=\"margin-bottom: 5px; float: none;\"\u003e\u003c\/div\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003ch3 style=\"text-align: left;\"\u003eWarranty\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLimited Lifetime Warranty\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"National Chimney","offers":[{"title":"6 Inch","offer_id":55250191548707,"sku":"NCSS6B","price":221.78,"currency_code":"USD","in_stock":true},{"title":"8 Inch","offer_id":55250191581475,"sku":"NCSS8B","price":241.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0780\/6926\/8771\/files\/National-Chimney-Insert-Boot-National-Chimney-Dreamwood-Living-233716971.jpg?v=1783014219"}],"url":"https:\/\/www.dreamwoodliving.com\/collections\/national-chimney.oembed","provider":"Dreamwood Living","version":"1.0","type":"link"}