{"product_id":"duravent-8dp-ap17x21-8-duraplus-chimney-transition-anchor-plate","title":"DuraVent 8DP-AP17X21 8\" DuraPlus Chimney Transition Anchor Plate","description":"\u003cp data-path-to-node=\"1\"\u003e\u003cspan\u003eBuild the perfect custom venting system for your heating appliance with the DuraVent 8\" DuraPlus Chimney Transition Anchor Plate.\u003c\/span\u003e\u003cspan\u003e Designed for exceptional performance and long-lasting durability,\u003c\/span\u003e\u003cspan\u003e this specialized anchor plate is expertly engineered for chimney restoration projects when extending or converting from a flexible DuraLiner system to a rigid DuraPlus triple-wall chimney (use in conjunction with a DuraLiner Slip Connector and Hanger).\u003c\/span\u003e\u003cspan\u003e Available in multiple base plate dimensions to fit your masonry setup—including 14\" x 17\" (8DP-AP14x17),\u003c\/span\u003e\u003cspan\u003e 17\" x 17\" (8DP-AP17x17),\u003c\/span\u003e\u003cspan\u003e 13\" x 21\" (8DP-AP13x21),\u003c\/span\u003e\u003cspan\u003e and 17\" x 21\" (8DP-AP17x21) with an 8.\u003c\/span\u003e\u003cspan\u003e0625-inch inner diameter (A) and 12.\u003c\/span\u003e\u003cspan\u003e375-inch outer diameter (B)—this robust component features a rugged .\u003c\/span\u003e\u003cspan\u003e018\" galvanized steel outer wall,\u003c\/span\u003e\u003cspan\u003e a .\u003c\/span\u003e\u003cspan\u003e016\" 430 stainless steel outer wall,\u003c\/span\u003e\u003cspan\u003e a .\u003c\/span\u003e\u003cspan\u003e016\" 430 stainless steel inner liner,\u003c\/span\u003e\u003cspan\u003e and an .\u003c\/span\u003e\u003cspan\u003e018\" aluminized steel intermediate liner.\u003c\/span\u003e\u003cspan\u003e Packed with insulated layers and a ventilated air space,\u003c\/span\u003e\u003cspan\u003e it locks tightly into place using a precision twist-lock connection.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-path-to-node=\"2\"\u003e\u003cspan\u003eEngineered for professional hearth contractors and dedicated DIY homeowners,\u003c\/span\u003e\u003cspan\u003e this premium transition anchor plate guarantees a fast,\u003c\/span\u003e\u003cspan\u003e reliable assembly for a fully code-compliant restoration installation.\u003c\/span\u003e\u003cspan\u003e Tested and listed to strict UL 103 HT safety standards (MH7399) and backed by a limited-lifetime warranty,\u003c\/span\u003e\u003cspan\u003e it provides dependable,\u003c\/span\u003e\u003cspan\u003e long-term thermal protection for your high-temperature all-fuel venting system.\u003c\/span\u003e\u003cspan\u003e As with all DuraPlus installations,\u003c\/span\u003e\u003cspan\u003e always remember to maintain a strictly mandatory 2-inch minimum airspace clearance to all combustible materials throughout your main chimney run.\u003c\/span\u003e\u003cspan\u003e Complete your residential wood stove or fireplace exhaust setup safely today with this indispensable DuraPlus anchor plate!\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUse Transition Anchor Plate with DuraPlus when extending or converting from DuraLiner to DuraPlus in chimney restoration.\u003c\/li\u003e\n\u003cli\u003eUse with DuraLiner Slip Connector and Hanger. (See DuraLiner section.)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eMaterials and Construction\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e.016” 430 stainless steel outer wall\u003c\/li\u003e\n\u003cli\u003e.016” 430 stainless steel inner liner.\u003c\/li\u003e\n\u003cli\u003e.018” galvanized steel outer wall.\u003c\/li\u003e\n\u003cli\u003e.018” aluminized steel intermediate liner.\u003c\/li\u003e\n\u003cli\u003eInsulated layers plus ventilated air space.\u003c\/li\u003e\n\u003cli\u003eLocks tightly with a precision twist-lock connection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable style=\"width: 534px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 128px;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"width: 85.625px;\"\u003eSize\u003c\/td\u003e\n\u003ctd style=\"width: 291.375px;\"\u003eDimension\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 128px;\"\u003e8DP-AP14x17\u003c\/td\u003e\n\u003ctd style=\"width: 85.625px;\"\u003e14\" x 17\"\u003c\/td\u003e\n\u003ctd style=\"width: 291.375px;\"\u003e8.0625\" (A) x 12.375\" (B)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 128px;\"\u003e8DP-AP17x17\u003c\/td\u003e\n\u003ctd style=\"width: 85.625px;\"\u003e17\" x 17\"\u003c\/td\u003e\n\u003ctd style=\"width: 291.375px;\"\u003e\u003cspan\u003e8.0625\" (A) x 12.375\" (B)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 128px;\"\u003e8DP-AP13x21\u003c\/td\u003e\n\u003ctd style=\"width: 85.625px;\"\u003e13\" x 21\"\u003c\/td\u003e\n\u003ctd style=\"width: 291.375px;\"\u003e\u003cspan\u003e8.0625\" (A) x 12.375\" (B)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 128px;\"\u003e8DP-AP17x21\u003c\/td\u003e\n\u003ctd style=\"width: 85.625px;\"\u003e17\" x 21\"\u003c\/td\u003e\n\u003ctd style=\"width: 291.375px;\"\u003e\u003cspan\u003e8.0625\" (A) x 12.375\" (B)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 128px;\"\u003eClearances\u003c\/td\u003e\n\u003ctd colspan=\"2\" style=\"width: 377px;\"\u003e2\" clearance to combustible.\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: 377px;\"\u003eUL Listed to UL 103HT (MH7399).\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: 377px;\"\u003eLimited-lifetime warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0718\/5022\/9802\/files\/DP_TAP_Drawing_480x480_cfd0015a-6226-47fb-942c-c658227a7e0b.jpg?v=1793029262\" alt=\"\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\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\u003ch3\u003e\u003c\/h3\u003e","brand":"DuraVent","offers":[{"title":"Default Title","offer_id":53145008603423,"sku":"8DP-AP17X21","price":513.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0718\/5022\/9802\/files\/DuraVent_8DP-AP17X21_8_DuraPlus_Chimney_Transition_Anchor_Plate.jpg?v=1793030666","url":"https:\/\/ridgeflame.com\/products\/duravent-8dp-ap17x21-8-duraplus-chimney-transition-anchor-plate","provider":"Ridge Flame","version":"1.0","type":"link"}