{"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-233672132.jpg?v=1781596911","url":"https:\/\/www.dreamwoodliving.com\/products\/national-chimney-m-flex-pellet-insert-basic-liner-kit","provider":"Dreamwood Living","version":"1.0","type":"link"}