{"product_id":"duravent-20-flex-pipe-length-duraflex-304-stainless-steel","title":"DuraVent 20' Flex Pipe Length DuraFlex 304 Stainless Steel","description":"\u003ch3 style=\"text-align: center;\"\u003eDuraVent 20' Flex Pipe Length DuraFlex 304 Stainless Steel\u003c\/h3\u003e\n\u003cp data-start=\"0\" data-end=\"700\" class=\"PDq2pG_selectionAnchorContainer\"\u003eThe \u003cstrong data-start=\"4\" data-end=\"59\"\u003eDuraVent 20' DuraFlex 304 Stainless Steel Flex Pipe\u003c\/strong\u003e is a premium flexible chimney liner designed for dependable masonry chimney relining in residential and commercial heating systems. Manufactured from durable 304 stainless steel, this 20-foot chimney liner is ideal for wood-burning fireplaces, wood stoves, non-condensing gas appliances, and oil-fired heating equipment with minimal chimney offsets. Its lightweight, flexible construction simplifies installation while providing excellent corrosion resistance and efficient flue gas venting. The DuraFlex 304 system is UL 1777 and ULC S635 listed, ensuring trusted safety, durability, and code-compliant performance.\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"702\" data-end=\"1312\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eEngineered for long-lasting reliability, the DuraFlex 304 stainless steel chimney liner improves chimney draft while protecting masonry flues from heat, moisture, and corrosive byproducts. It is an excellent solution for chimney restoration, fireplace inserts, furnaces, boilers, and oil appliance venting, delivering consistent performance with easy installation. Whether upgrading an aging chimney or installing a new venting system, this 20-foot flexible chimney liner offers dependable efficiency, professional-grade quality, and the trusted performance expected from DuraVent chimney products.\u003c\/p\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-section-id=\"rygcat\" data-start=\"0\" data-end=\"194\"\u003e\n\u003cstrong data-start=\"2\" data-end=\"58\" data-is-only-node=\"\"\u003eDuraVent 20' DuraFlex 304 Stainless Steel Flex Pipe:\u003c\/strong\u003e Premium 20-foot flexible chimney liner designed for dependable masonry chimney relining and long-lasting venting performance.\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1i2ty46\" data-start=\"195\" data-end=\"390\"\u003e\n\u003cstrong data-start=\"197\" data-end=\"234\" data-is-only-node=\"\"\u003e304 Stainless Steel Construction:\u003c\/strong\u003e Manufactured from durable 304 stainless steel to provide excellent corrosion resistance, strength, and reliability in demanding venting applications.\u003c\/li\u003e\n\u003cli data-section-id=\"12k1a5l\" data-start=\"391\" data-end=\"579\"\u003e\n\u003cstrong data-start=\"393\" data-end=\"433\" data-is-only-node=\"\"\u003eCompatible with Multiple Fuel Types:\u003c\/strong\u003e Designed for use with solid fuel, non-condensing gas, and oil-fired appliances, making it a versatile solution for various heating systems.\u003c\/li\u003e\n\u003cli data-section-id=\"1mqt0dr\" data-start=\"580\" data-end=\"765\"\u003e\n\u003cstrong data-start=\"582\" data-end=\"616\" data-is-only-node=\"\"\u003eFlexible Chimney Liner Design:\u003c\/strong\u003e The flexible stainless steel liner simplifies installation in masonry chimneys with minimal offsets while maintaining efficient flue gas flow.\u003c\/li\u003e\n\u003cli data-section-id=\"czqy6c\" data-start=\"766\" data-end=\"932\"\u003e\n\u003cstrong data-start=\"768\" data-end=\"801\" data-is-only-node=\"\"\u003eImproves Chimney Performance:\u003c\/strong\u003e Helps restore aging chimneys, improve draft efficiency, and protect masonry flues from heat, moisture, and corrosive byproducts.\u003c\/li\u003e\n\u003cli data-section-id=\"1rzeit5\" data-start=\"933\" data-end=\"1097\"\u003e\n\u003cstrong data-start=\"935\" data-end=\"987\" data-is-only-node=\"\"\u003eIdeal for Residential \u0026amp; Commercial Applications:\u003c\/strong\u003e Suitable for wood stoves, fireplaces, fireplace inserts, furnaces, boilers, and oil heating appliances.\u003c\/li\u003e\n\u003cli data-section-id=\"1eplm0n\" data-start=\"1098\" data-end=\"1264\"\u003e\n\u003cstrong data-start=\"1100\" data-end=\"1128\" data-is-only-node=\"\"\u003eUL Listed Chimney Liner:\u003c\/strong\u003e Part of the trusted DuraFlex 304 system, UL 1777 and ULC S635 listed for safe, code-compliant chimney relining installations.\u003c\/li\u003e\n\u003cli data-section-id=\"ky598a\" data-start=\"1265\" data-end=\"1458\"\u003e\n\u003cstrong data-start=\"1267\" data-end=\"1313\" data-is-only-node=\"\"\u003eProfessional Chimney Restoration Solution:\u003c\/strong\u003e A high-quality flex chimney liner that delivers reliable venting performance and easy installation for new or replacement chimney systems\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;\"\u003e3DF304-20\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;\"\u003e4DF304-20\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;\"\u003e5DF304-20\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;\"\u003e55DF304-20\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;\"\u003e6DF304-20\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;\"\u003e7DF304-20\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;\"\u003e8DF304-20\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 style=\"width: 372px;\" colspan=\"2\"\u003e304 Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 128px;\"\u003eConstruction\u003c\/td\u003e\n\u003ctd style=\"width: 372px;\" colspan=\"2\"\u003eSingle-Wall\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 128px;\"\u003eClearance\u003c\/td\u003e\n\u003ctd style=\"width: 372px;\" colspan=\"2\"\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 style=\"width: 372px;\" colspan=\"2\"\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 style=\"width: 372px;\" colspan=\"2\"\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 style=\"width: 372px;\" colspan=\"2\"\u003eLimited-lifetime warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cstrong\u003eDownloads\u003c\/strong\u003e\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":53631906447651,"sku":"3DF304-20","price":536.0,"currency_code":"USD","in_stock":true},{"title":"20 \/ 4X 20'","offer_id":55325378281763,"sku":"4DF304-20","price":618.0,"currency_code":"USD","in_stock":true},{"title":"20 \/ 5 X 20'","offer_id":55325378314531,"sku":"5DF304-20","price":736.0,"currency_code":"USD","in_stock":true},{"title":"20 \/ 5.5 X 20'","offer_id":55325378347299,"sku":"55DF304-20","price":788.0,"currency_code":"USD","in_stock":true},{"title":"20 \/ 6 X 20'","offer_id":55325378380067,"sku":"6DF304-20","price":843.0,"currency_code":"USD","in_stock":true},{"title":"20 \/ 7 X 20'","offer_id":55325378412835,"sku":"7DF304-20","price":988.0,"currency_code":"USD","in_stock":true},{"title":"20 \/ 8 X 20'","offer_id":55325378445603,"sku":"8DF304-20","price":1142.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0780\/6926\/8771\/files\/DuraVent-20_-Flex-Pipe-Length-DuraFlex-304-Stainless-Steel-DuraVent-Dreamwood-Living-25568812.jpg?v=1780433459","url":"https:\/\/www.dreamwoodliving.com\/products\/duravent-20-flex-pipe-length-duraflex-304-stainless-steel","provider":"Dreamwood Living","version":"1.0","type":"link"}