{"product_id":"duravent-6dt-cs24-2-6-x-24-duratech-black-square-ceiling-support-box","title":"DuraVent 6DT-CS24-2 6\" x 24\" DuraTech Black Square Ceiling Support Box","description":"\u003cp\u003eSecurely transition your interior stovepipe to your factory-built chimney pipe with the DuraVent 6\" x 24\" DuraTech Black Square Ceiling Support Box. Designed for flat ceilings, cathedral (A-frame) installations, and short attic spaces, this extended 24-inch support box safely carries the vertical weight of your chimney while cleanly framing the ceiling opening. It is specifically engineered to fit perfectly between standard 16-inch on-center ceiling joists, making it an ideal choice for both conventional residential builds and most manufactured home applications where additional vertical length is required.\u003c\/p\u003e\n\u003cp\u003eThis comprehensive support box (model 6DT-CS24-2) comes fully equipped with an integrated starter-coupler, an integrated flue extension, and a decorative two-piece black ceiling trim to deliver a polished interior finish. The built-in twist-lock mechanism ensures a fast, positive connection to 6-inch DuraTech double-wall chimney pipe, while the flue extension seamlessly accepts either single-wall or double-wall stovepipe from below. Built to maintain proper fire safety clearances to combustibles, this extended support box guarantees a strictly code-compliant, sturdy, and visually appealing hearth setup. Upgrade your wood stove installation today with this essential DuraVent ceiling support!\u003c\/p\u003e\n\u003ch3 class=\"station-tabs-tabtitle\"\u003e\u003cspan id=\"station-tabs-tab_ht-i0-t13\" class=\"station-tabs-tab is-active\" 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\u003eCeiling Support Box\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\" 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\u003eSupports chimney pipe and provides a positive connection between support box and chimney with a built-in twist-lock.\u003c\/li\u003e\n\u003cli\u003eSuitable for both flat and cathedral (A-Frame) ceiling applications.\u003c\/li\u003e\n\u003cli\u003eAlso use in short attic spaces (see instructions).\u003c\/li\u003e\n\u003cli\u003eFits between standard 16” on-center joists and most manufactured home applications.\u003c\/li\u003e\n\u003cli\u003eSupport Box includes Integrated Starter-Coupler, Integrated Flue Extension, and 2-piece Black Ceiling Trim.\u003c\/li\u003e\n\u003cli\u003eIntegrated Flue Extension accepts either single-wall or double-wall stovepipe.\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\" 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%\"\u003e6DT-CS24-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"50%\"\u003eSeries\u003c\/td\u003e\n\u003ctd width=\"50%\"\u003eDuraTech DT (5\"-8\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eCeiling Support Box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e(Size) Inside Diameter\u003c\/td\u003e\n\u003ctd\u003e6”\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eA\u003c\/td\u003e\n\u003ctd\u003e6”\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB\u003c\/td\u003e\n\u003ctd\u003e12”\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eC\u003c\/td\u003e\n\u003ctd\u003e1 3\/4”\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_-_Square_Ceiling_Support_Box_f8c53860-25f9-4ef3-a011-15e51f666c37.jpg?v=1790176225\" 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":44896725205034,"sku":"6DT-CS24-2","price":407.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0718\/5022\/9802\/files\/DuraVent_6DT-CS36-2_6_x_36_DuraTech_Black_Square_Ceiling_Support_Box.jpg?v=1790178036","url":"https:\/\/ridgeflame.com\/products\/duravent-6dt-cs24-2-6-x-24-duratech-black-square-ceiling-support-box","provider":"Ridge Flame","version":"1.0","type":"link"}