{"product_id":"duravent-20-flex-pipe-length-duraflex-316-stainless-steel-basic-kit","title":"DuraVent 20' Flex Pipe Length DuraFlex 316 Stainless Steel Basic Kit","description":"\u003ch3 style=\"text-align: center;\"\u003eDuraVent 20' Flex Pipe Length DuraFlex 316 Stainless Steel Basic Kit\u003c\/h3\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-6a43b619-0ba0-83e9-8ec8-3118c3ecac8e-9\" data-is-intersecting=\"true\"\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\" data-turn-id=\"request-6a43b619-0ba0-83e9-8ec8-3118c3ecac8e-9\" data-turn-id-container=\"request-6a43b619-0ba0-83e9-8ec8-3118c3ecac8e-9\" data-testid=\"conversation-turn-1846\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto [--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 data-conversation-screenshot-content=\"\" 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 data-message-author-role=\"assistant\" data-message-id=\"6c9cf1f1-604e-44c8-a37b-15835634ffb6\" dir=\"auto\" data-message-model-slug=\"gpt-5-5\" 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\"\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 data-start=\"0\" data-end=\"707\"\u003eThe \u003cstrong data-start=\"4\" data-end=\"59\"\u003eDuraVent 20' DuraFlex 316 Stainless Steel Basic Kit\u003c\/strong\u003e is a premium flexible chimney liner kit designed for safe, efficient masonry chimney relining in residential and commercial applications. Manufactured from highly corrosion-resistant 316 stainless steel, this 20-foot chimney liner kit is ideal for wood-burning fireplaces, wood stoves, non-condensing gas appliances, oil-fired systems, and coal-burning appliances. Its lightweight, flexible construction simplifies installation in chimneys with minimal offsets while maintaining excellent draft and reliable flue gas performance. The system is UL 1777 and ULC S635 listed, providing trusted, code-compliant chimney venting.\u003c\/p\u003e\n\u003cp data-start=\"709\" data-end=\"1309\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eBuilt for demanding venting environments, the DuraFlex 316 stainless steel chimney liner offers superior resistance to heat, moisture, and corrosive combustion byproducts, making it an excellent choice for coal-fired heating systems and long-term chimney protection. This 20-foot flexible chimney liner kit improves venting efficiency, protects masonry flues, and supports optimal appliance performance. Backed by DuraVent’s proven engineering, it delivers a durable and professional-grade solution for fireplace inserts, furnaces, boilers, and wood stove chimney liner installations.\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\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli data-section-id=\"f9bq9r\" data-start=\"0\" data-end=\"197\"\u003e\n\u003cstrong data-start=\"2\" data-end=\"58\" data-is-only-node=\"\"\u003eDuraVent 20' DuraFlex 316 Stainless Steel Basic Kit:\u003c\/strong\u003e Complete 20-foot flexible chimney liner kit designed for professional masonry chimney relining and reliable venting performance.\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"llr7xi\" data-start=\"198\" data-end=\"407\"\u003e\n\u003cstrong data-start=\"200\" data-end=\"246\" data-is-only-node=\"\"\u003ePremium 316 Stainless Steel Chimney Liner:\u003c\/strong\u003e Constructed with durable 316 stainless steel alloy for superior corrosion resistance, strength, and long-lasting protection against harsh flue conditions.\u003c\/li\u003e\n\u003cli data-section-id=\"1bf1zyh\" data-start=\"408\" data-end=\"598\"\u003e\n\u003cstrong data-start=\"410\" data-end=\"451\" data-is-only-node=\"\"\u003eAvailable in Multiple Diameter Sizes:\u003c\/strong\u003e Offered in 3\" to 8\" diameters to support a variety of wood stoves, fireplace inserts, fireplaces, furnaces, boilers, and oil appliances.\u003c\/li\u003e\n\u003cli data-section-id=\"sc0hcf\" data-start=\"599\" data-end=\"778\"\u003e\n\u003cstrong data-start=\"601\" data-end=\"641\" data-is-only-node=\"\"\u003eFlexible Chimney Liner Installation:\u003c\/strong\u003e Designed to easily navigate chimney pathways with minimal offsets, allowing for smoother installation and improved venting efficiency.\u003c\/li\u003e\n\u003cli data-section-id=\"1oeat81\" data-start=\"779\" data-end=\"941\"\u003e\n\u003cstrong data-start=\"781\" data-end=\"814\" data-is-only-node=\"\"\u003eMultiple Flex Length Options:\u003c\/strong\u003e Available in\u003cstrong\u003e \u003c\/strong\u003e15’, 20’, 25’, 30’, and 35’ lengths to accommodate different chimney heights and installation requirements.\u003c\/li\u003e\n\u003cli data-section-id=\"mgeny1\" data-start=\"942\" data-end=\"1125\"\u003e\n\u003cstrong data-start=\"944\" data-end=\"1003\" data-is-only-node=\"\"\u003eCompatible with Solid Fuel \u0026amp; Non-Condensing Appliances:\u003c\/strong\u003e Ideal for\u003cstrong\u003e \u003c\/strong\u003esolid-fuel, non-condensing gas, and oil-fired appliances, providing a versatile chimney venting solution.\u003c\/li\u003e\n\u003cli data-section-id=\"3kk64m\" data-start=\"1126\" data-end=\"1327\"\u003e\n\u003cstrong data-start=\"1128\" data-end=\"1162\" data-is-only-node=\"\"\u003eEnhanced Corrosion Protection:\u003c\/strong\u003e The 316 stainless steel liner provides increased resistance for demanding applications, including coal-burning appliances and sulfur-rich fuel conditions.\u003c\/li\u003e\n\u003cli data-section-id=\"1sr19le\" data-start=\"1328\" data-end=\"1478\"\u003e\n\u003cstrong data-start=\"1330\" data-end=\"1370\" data-is-only-node=\"\"\u003eImproves Chimney Draft \u0026amp; Efficiency:\u003c\/strong\u003e Helps optimize flue gas flow, restore chimney performance, and support efficient appliance operation.\u003c\/li\u003e\n\u003cli data-section-id=\"1h3cvey\" data-start=\"1479\" data-end=\"1631\"\u003e\n\u003cstrong data-start=\"1481\" data-end=\"1524\" data-is-only-node=\"\"\u003eProfessional Chimney Relining Solution:\u003c\/strong\u003e Perfect for chimney liner replacement, fireplace insert installations, and wood stove vent upgrades.\u003c\/li\u003e\n\u003cli data-section-id=\"4jlvij\" data-start=\"1632\" data-end=\"1789\"\u003e\n\u003cstrong data-start=\"1634\" data-end=\"1664\" data-is-only-node=\"\"\u003eUL Listed DuraFlex System:\u003c\/strong\u003e Part of the trusted DuraVent DuraFlex 316 series, designed for safe, code-compliant chimney relining applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"width: 520px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 128px;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"width: 178.198px;\"\u003eSize\u003c\/td\u003e\n\u003ctd style=\"width: 193.802px;\"\u003eFlex Length\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 128px;\"\u003e3DF316-20K\u003c\/td\u003e\n\u003ctd style=\"width: 178.198px;\"\u003e3\" I.D\u003c\/td\u003e\n\u003ctd style=\"width: 193.802px;\"\u003e20 ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 128px;\"\u003e4DF316-20K\u003c\/td\u003e\n\u003ctd style=\"width: 178.198px;\"\u003e4\" I.D\u003c\/td\u003e\n\u003ctd style=\"width: 193.802px;\"\u003e20 ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 128px;\"\u003e5DF316-20K\u003c\/td\u003e\n\u003ctd style=\"width: 178.198px;\"\u003e5\" I.D\u003c\/td\u003e\n\u003ctd style=\"width: 193.802px;\"\u003e20 ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 128px;\"\u003e55DF316-20K\u003c\/td\u003e\n\u003ctd style=\"width: 178.198px;\"\u003e5.5\" I.D\u003c\/td\u003e\n\u003ctd style=\"width: 193.802px;\"\u003e20 ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 128px;\"\u003e6DF316-20K\u003c\/td\u003e\n\u003ctd style=\"width: 178.198px;\"\u003e6\" I.D\u003c\/td\u003e\n\u003ctd style=\"width: 193.802px;\"\u003e20 ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 128px;\"\u003e7DF316-20K\u003c\/td\u003e\n\u003ctd style=\"width: 178.198px;\"\u003e7\" I.D\u003c\/td\u003e\n\u003ctd style=\"width: 193.802px;\"\u003e20 ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 128px;\"\u003e8DF316-20K\u003c\/td\u003e\n\u003ctd style=\"width: 178.198px;\"\u003e8\" I.D\u003c\/td\u003e\n\u003ctd style=\"width: 193.802px;\"\u003e20 ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 128px;\"\u003eMaterials\u003c\/td\u003e\n\u003ctd colspan=\"2\" style=\"width: 372px;\"\u003e316 Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 128px;\"\u003eConstruction\u003c\/td\u003e\n\u003ctd colspan=\"2\" style=\"width: 372px;\"\u003eSingle-Wall\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 128px;\"\u003eClearance\u003c\/td\u003e\n\u003ctd colspan=\"2\" style=\"width: 372px;\"\u003e0” clearance for gas, oil, and pellet applications.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 128px;\"\u003eClearance\u003c\/td\u003e\n\u003ctd colspan=\"2\" style=\"width: 372px;\"\u003e1” clearance to masonry for wood-burning\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 128px;\"\u003eListings\u003c\/td\u003e\n\u003ctd colspan=\"2\" style=\"width: 372px;\"\u003eListed to UL 1777 and ULC S635 (MH45609).\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 128px;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd colspan=\"2\" style=\"width: 372px;\"\u003eLimited-lifetime warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eDownloads\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0100\/7917\/4734\/files\/DuraFlex_Catalog.pdf?v=1652650777\" target=\"_blank\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eProduct Catalog\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0100\/7917\/4734\/files\/DuraFlex_Installation_Manual.pdf?v=1652650795\" target=\"_blank\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eInstruction Manual\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DuraVent","offers":[{"title":"20 \/ 3\"DF316 20 Kit","offer_id":53631908282659,"sku":"3DF316-20K","price":771.0,"currency_code":"USD","in_stock":true},{"title":"20 \/ 4\"DF316 20 Kit","offer_id":55329900232995,"sku":"4DF316-20K","price":881.0,"currency_code":"USD","in_stock":true},{"title":"20 \/ 5\"DF316 20 Kit","offer_id":55329900265763,"sku":"5DF316-20K","price":1068.0,"currency_code":"USD","in_stock":true},{"title":"20 \/ 5.5\"DF316 20 Kit","offer_id":55329900298531,"sku":"5.5DF316-20K","price":1153.0,"currency_code":"USD","in_stock":true},{"title":"20 \/ 6\"DF316 20 Kit","offer_id":55329900331299,"sku":"6DF316-20K","price":1241.0,"currency_code":"USD","in_stock":true},{"title":"20 \/ 7\"DF316 20 Kit","offer_id":55329900364067,"sku":"7DF316-20K","price":1416.0,"currency_code":"USD","in_stock":true},{"title":"20 \/ 8\"DF316 20 Kit","offer_id":55329900396835,"sku":"8DF316-20K","price":1523.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0780\/6926\/8771\/files\/DuraVent-20_-Flex-Pipe-Length-DuraFlex-316-Stainless-Steel-Basic-Kit-DuraVent-Dreamwood-Living-26054998.jpg?v=1780434837","url":"https:\/\/www.dreamwoodliving.com\/products\/duravent-20-flex-pipe-length-duraflex-316-stainless-steel-basic-kit","provider":"Dreamwood Living","version":"1.0","type":"link"}