{"product_id":"duravent-20-flex-pipe-length-duraflex-316-stainless-steel","title":"DuraVent 20' Flex Pipe Length DuraFlex 316 Stainless Steel","description":"\u003ch3 style=\"text-align: center;\"\u003eDuraVent 20' Flex Pipe Length DuraFlex 316 Stainless Steel\u003c\/h3\u003e\n\u003cdiv data-is-intersecting=\"true\" data-turn-id-container=\"request-6a43b619-0ba0-83e9-8ec8-3118c3ecac8e-6\" class=\"\"\u003e\n\u003csection data-turn=\"assistant\" data-testid=\"conversation-turn-1842\" data-turn-id-container=\"request-6a43b619-0ba0-83e9-8ec8-3118c3ecac8e-6\" data-turn-id=\"request-6a43b619-0ba0-83e9-8ec8-3118c3ecac8e-6\" dir=\"auto\" 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)))]\"\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 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\" data-conversation-screenshot-content=\"\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv 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\" data-message-model-slug=\"gpt-5-5\" dir=\"auto\" data-message-id=\"0424617c-c6e9-4d42-ba83-bd4b16da05eb\" data-message-author-role=\"assistant\"\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-end=\"722\" data-start=\"0\"\u003eThe \u003cstrong data-end=\"59\" data-start=\"4\"\u003eDuraVent 20' DuraFlex 316 Stainless Steel Flex Pipe\u003c\/strong\u003e is a premium flexible chimney liner designed for dependable masonry chimney relining and high-efficiency venting. Manufactured from highly corrosion-resistant 316 stainless steel, this 20-foot chimney liner is ideal for wood-burning fireplaces, wood stoves, non-condensing gas appliances, oil-fired systems, and coal-burning appliances where enhanced corrosion protection is essential. Its lightweight, flexible construction allows easy installation through chimneys with minimal offsets while maintaining excellent draft and efficient flue gas flow. The liner is UL 1777 and ULC S635 listed, ensuring safe and code-compliant performance.\u003c\/p\u003e\n\u003cp data-is-only-node=\"\" data-is-last-node=\"\" data-end=\"1293\" data-start=\"724\"\u003eEngineered for long-lasting durability, the DuraFlex 316 stainless steel chimney liner protects masonry chimneys from heat, moisture, and corrosive combustion byproducts while improving overall venting efficiency. This 20-foot flexible chimney liner is an excellent choice for fireplace inserts, furnaces, boilers, and solid-fuel heating systems, delivering reliable performance in demanding installations. Backed by DuraVent’s trusted engineering, it provides a professional-grade chimney relining solution for both residential and commercial applications.\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\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli data-end=\"205\" data-start=\"0\" data-section-id=\"1c7uqme\"\u003e\n\u003cstrong data-is-only-node=\"\" data-end=\"62\" data-start=\"2\"\u003ePremium DuraVent DuraFlex 316 Stainless Steel Flex Pipe:\u003c\/strong\u003e High-quality 20-foot flexible chimney liner engineered for dependable masonry chimney relining and long-lasting venting performance.\u003cspan class=\"PDq2pG_selectionAnchor\" aria-hidden=\"true\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"416\" data-start=\"206\" data-section-id=\"1aued1l\"\u003e\n\u003cstrong data-is-only-node=\"\" data-end=\"261\" data-start=\"208\"\u003eCompatible with Solid Fuel, Gas \u0026amp; Oil Appliances:\u003c\/strong\u003e Designed for use with solid-fuel, non-condensing gas, and oil-fired appliances, including wood stoves, fireplace inserts, furnaces, and boilers.\u003c\/li\u003e\n\u003cli data-end=\"600\" data-start=\"417\" data-section-id=\"vfg7dd\"\u003e\n\u003cstrong data-is-only-node=\"\" data-end=\"465\" data-start=\"419\"\u003eSuperior 316 Stainless Steel Construction:\u003c\/strong\u003e Manufactured from 316 stainless steel alloy to deliver exceptional durability and long-term resistance to harsh flue conditions.\u003c\/li\u003e\n\u003cli data-end=\"798\" data-start=\"601\" data-section-id=\"7vfs2c\"\u003e\n\u003cstrong data-is-only-node=\"\" data-end=\"637\" data-start=\"603\"\u003eEnhanced Corrosion Resistance:\u003c\/strong\u003e The\u003cstrong\u003e \u003c\/strong\u003e316 alloy chimney liner is proven to provide additional corrosion resistance when burning coal or sulfur-rich oil fuels, extending liner life.\u003c\/li\u003e\n\u003cli data-end=\"984\" data-start=\"799\" data-section-id=\"2bpe1h\"\u003e\n\u003cstrong data-is-only-node=\"\" data-end=\"835\" data-start=\"801\"\u003eFlexible Chimney Liner Design:\u003c\/strong\u003e Easily conforms to chimney pathways with minimal offsets, simplifying installation while maintaining efficient flue gas flow and proper draft.\u003c\/li\u003e\n\u003cli data-end=\"1175\" data-start=\"985\" data-section-id=\"fusbhh\"\u003e\n\u003cstrong data-is-only-node=\"\" data-end=\"1027\" data-start=\"987\"\u003eIdeal for Coal-Burning Applications:\u003c\/strong\u003e Recommended where greater protection against corrosive combustion byproducts is required, making it an excellent coal chimney liner solution.\u003c\/li\u003e\n\u003cli data-end=\"1341\" data-start=\"1176\" data-section-id=\"1ka886w\"\u003e\n\u003cstrong data-is-only-node=\"\" data-end=\"1210\" data-start=\"1178\"\u003eImproves Chimney Efficiency:\u003c\/strong\u003e Restores proper venting performance, enhances heating appliance efficiency, and helps reduce creosote and flue gas restrictions.\u003c\/li\u003e\n\u003cli data-end=\"1504\" data-start=\"1342\" data-section-id=\"hn4yph\"\u003e\n\u003cstrong data-is-only-node=\"\" data-end=\"1386\" data-start=\"1344\"\u003eReliable Chimney Restoration Solution:\u003c\/strong\u003e Perfect for chimney liner replacement, fireplace insert installations, and wood stove venting upgrades.\u003c\/li\u003e\n\u003cli data-end=\"1677\" data-start=\"1505\" data-section-id=\"1gp0qlj\"\u003e\n\u003cstrong data-is-only-node=\"\" data-end=\"1532\" data-start=\"1507\"\u003eUL Listed for Safety:\u003c\/strong\u003e Part of the trusted\u003cstrong\u003e \u003c\/strong\u003eDuraVent DuraFlex 316 series, UL 1777 and ULC S635 listed for safe, code-compliant chimney relining installations.\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;\"\u003e3DF316-20\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;\"\u003e4DF316-20\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;\"\u003e5DF316-20\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;\"\u003e55DF316-20\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;\"\u003e6DF316-20\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;\"\u003e7DF316-20\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;\"\u003e8DF316-20\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\u003eDownload Product 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\u003eDownload Instruction Manual\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DuraVent","offers":[{"title":"20 \/ 3 X 20'","offer_id":53631906906403,"sku":"3DF316-20","price":590.0,"currency_code":"USD","in_stock":true},{"title":"20 \/ 4 X 20'","offer_id":55329876771107,"sku":"4DF316-20","price":681.0,"currency_code":"USD","in_stock":true},{"title":"20 \/ 5 X 20'","offer_id":55329876803875,"sku":"5DF316-20","price":854.0,"currency_code":"USD","in_stock":true},{"title":"20 \/ 5.5 X 20'","offer_id":55329876836643,"sku":"5.5DF316-20","price":931.0,"currency_code":"USD","in_stock":true},{"title":"20 \/ 6 X 20'","offer_id":55329876869411,"sku":"6DF316-20","price":1016.0,"currency_code":"USD","in_stock":true},{"title":"20 \/ 7 X 20'","offer_id":55329876902179,"sku":"7DF316-20","price":1167.0,"currency_code":"USD","in_stock":true},{"title":"20 \/ 8 X 20'","offer_id":55329876934947,"sku":"8DF316-20","price":1263.0,"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-DuraVent-Dreamwood-Living-26055424.jpg?v=1780434841","url":"https:\/\/www.dreamwoodliving.com\/products\/duravent-20-flex-pipe-length-duraflex-316-stainless-steel","provider":"Dreamwood Living","version":"1.0","type":"link"}