{"product_id":"duravent-8dt-21tass-8-x-14-22-duratech-stainless-steel-adjustable-chimney-pipe","title":"DuraVent 8DT-21TASS 8\" x 14\" - 22\" DuraTech Stainless Steel Adjustable Chimney Pipe","description":"\u003cp data-path-to-node=\"1\"\u003eBuild the perfect custom venting system for your heating appliance with the DuraVent 8\" x 14\" - 22\" DuraTech Stainless Steel Adjustable Chimney Pipe. Designed for exceptional performance and premium long-lasting durability, this versatile adjustable pipe section easily slides to extend anywhere from 14 to 22 inches, providing the exact length needed for your installation without the hassle of cutting. It features a highly corrosion-resistant stainless steel outer casing paired with a heavy-duty stainless steel inner wall. Its advanced double-wall, insulated design safely contains high-temperature exhaust while rigorously maintaining a cooler outer surface to protect your home's surrounding structural framing.\u003c\/p\u003e\n\u003cp data-path-to-node=\"2\"\u003eEngineered for professional hearth contractors and dedicated DIY homeowners, this specific adjustable length (model 8DT-21TASS) is the perfect component for making precise height adjustments to bridge odd gaps and achieve your exact installation requirements, whether used indoors or exposed to the harsh outside elements. It integrates seamlessly with DuraVent's highly secure, built-in twist-lock connection system, ensuring a fast, completely hassle-free assembly without the need for mechanical fasteners. When calculating your total vertical run, simply subtract 1 ¼ inches for the joint overlap at each standard connection, and always ensure a strictly mandatory 2-inch minimum airspace clearance to all combustible materials. Complete your custom wood stove or fireplace exhaust setup today with this indispensable, premium stainless steel DuraTech piping component!\u003c\/p\u003e\n\u003ch3 class=\"station-tabs-tabtitle\"\u003e\u003cspan id=\"station-tabs-tab_ht-i0-t13\" class=\"station-tabs-tab is-active\" data-slug=\"whats-included\" role=\"button\" tabindex=\"0\"\u003e\u003cspan class=\"station-tabs-tabtext\"\u003eIncluded\u003c\/span\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cdiv class=\"station-tabs-tabpanel is-active\" id=\"station-tabs-tabpanel_ht-i0-t13\" role=\"region\"\u003e\n\u003cdiv class=\"station-tabs-tabcontent\"\u003e\n\u003cul\u003e\n\u003cli\u003eAdjustable Pipe (SS)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"station-tabs-tabtitle\"\u003e\u003cspan id=\"station-tabs-tab_ht-i0-t17\" class=\"station-tabs-tab is-active\" data-slug=\"features\" role=\"button\" tabindex=\"0\"\u003e\u003cspan class=\"station-tabs-tabtext\"\u003eFeatures\u003c\/span\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cdiv class=\"station-tabs-tabpanel is-active\" id=\"station-tabs-tabpanel_ht-i0-t17\" role=\"region\"\u003e\n\u003cdiv class=\"station-tabs-tabcontent\"\u003e\n\u003cul\u003e\n\u003cli\u003eUse to add length to DuraTech chimney where exact length is needed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"station-tabs-tabtitle\"\u003e\u003cspan id=\"station-tabs-tab_ht-i0-t25\" class=\"station-tabs-tab is-active\" data-slug=\"specifications\" role=\"button\" tabindex=\"0\"\u003e\u003cspan class=\"station-tabs-tabtext\"\u003eSpecifications\u003c\/span\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cdiv class=\"station-tabs-tabpanel is-active\" id=\"station-tabs-tabpanel_ht-i0-t25\" role=\"region\"\u003e\n\u003cdiv class=\"station-tabs-tabcontent\"\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"50%\"\u003eModel\u003c\/td\u003e\n\u003ctd width=\"50%\"\u003e8DT-21TASS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"50%\"\u003eSeries\u003c\/td\u003e\n\u003ctd width=\"50%\"\u003eDuraTech (6\"-8\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eAdjustable Pipe\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Finish\u003c\/td\u003e\n\u003ctd\u003eStainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e(Size) Inside Diameter\u003c\/td\u003e\n\u003ctd\u003e8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e14”-22”\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eTechnical Dimensions\u003c\/h3\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0718\/5022\/9802\/files\/DuraTech_DT_-_Adjustable_Pipe_0e685267-e507-484e-808e-4902fe60f105.jpg?v=1791036942\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eWarranty\u003c\/span\u003e\u003c\/h3\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 45.2979%;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0718\/5022\/9802\/files\/ChatGPT_Image_Jun_18_2026_02_25_23_PM.png?v=1781771144\" alt=\"\"\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 54.3543%;\"\u003eDuravent, Inc. (“Duravent”) provides this limited lifetime warranty for all of its products with the exception of Ventinox® (lifetime), and PolyPro® (ten years). Subject to the limitations set forth below, Duravent warrants that its products will be free from defects in material or manufacturing, if properly installed, maintained and used.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3 style=\"color: rgb(255, 128, 0);\"\u003e\u003cspan style=\"color: rgb(48, 48, 48); font-size: 0.875rem;\"\u003eAbout The Manufacturer\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(48, 48, 48); font-size: 0.875rem;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0718\/5022\/9802\/files\/Duravent_Logo.png?v=1789738697\" alt=\"\" width=\"411\" height=\"124\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eDuraVent is a leading manufacturer of high-quality chimney and venting systems for residential and commercial applications. The company provides reliable solutions for wood, gas, pellet, and oil-burning appliances. Its products are rigorously tested to meet strict safety standards in the United States and Canada. DuraVent systems are engineered for durability, dependable performance, and long-term protection. Innovative features such as twist-lock connections help make installation faster, easier, and more secure. Trusted by homeowners and industry professionals, DuraVent is a recognized leader in venting technology.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"DuraVent","offers":[{"title":"Default Title","offer_id":52961320894751,"sku":"8DT-21TASS","price":617.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0718\/5022\/9802\/files\/DuraVent_8DT-21TASS_8_x_14_-_22_DuraTech_Stainless_Steel_Adjustable_Chimney_Pipe.jpg?v=1791037067","url":"https:\/\/ridgeflame.com\/products\/duravent-8dt-21tass-8-x-14-22-duratech-stainless-steel-adjustable-chimney-pipe","provider":"Ridge Flame","version":"1.0","type":"link"}