{"product_id":"duravent-duraplus-6-inner-diameter-square-ceiling-support-box","title":"DuraVent DuraPlus 6\" Inner Diameter Square Ceiling Support Box","description":"\u003ch3 style=\"text-align: center;\"\u003eDuraVent DuraPlus 6\" Inner Diameter Square Ceiling Support Box\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eDuraVent DuraPlus 6\" Inner Diameter Square Ceiling Support Box\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e is a durable \u003c\/span\u003etriple-wall chimney system component designed to provide secure structural support for vertical runs in wood stove chimney installations and other all-fuel venting systems. Engineered with advanced ceramic blanket insulation and an air-space layer, this insulated ceiling support box keeps exterior surfaces cool while maintaining a strong internal draft to improve stove efficiency. The secure insulation eliminates hot spots and enhances overall chimney venting safety, making it an essential part of a reliable residential chimney installation.\u003c\/p\u003e\n\u003cp\u003eBuilt for continuous operation at flue gas temperatures up to 1000°F, the DuraVent DuraPlus square ceiling support box meets strict UL-listed chimney standards, including one hour at 1400°F and three 2100°F chimney fire tests. This heavy-duty galvanized steel chimney support component delivers long-lasting fire-safe performance and dependable structural stability for all-fuel chimney systems.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eFeatures\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eVersatile Ceiling Installation Compatibility:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Designed for \u003c\/span\u003eflat, vaulted, and cathedral ceilings, the DuraVent DuraPlus square ceiling support box provides flexible installation options for wood stove chimney systems and all-fuel venting applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eHeavy-Duty Chimney Support System:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Engineered to support up to \u003c\/span\u003e35 feet of DuraPlus chimney pipe, ensuring strong structural stability for long vertical runs in residential chimney venting systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eBuilt-In Starter Section Design:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Includes a \u003c\/span\u003ebuilt-in starter section for simplified installation, making it an essential component for efficient triple-wall chimney pipe setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eAdapter Compatibility for Flexibility:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Designed for use with \u003c\/span\u003eDVL and DuraBlack adapters, allowing seamless integration with various stove pipe and chimney venting configurations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eProfessional Black Finish:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e The \u003c\/span\u003esquare ceiling support box is painted black, delivering a clean, professional appearance that blends with modern fireplace and chimney installations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eTrim Kit Included:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Comes complete with a \u003c\/span\u003etrim piece for a finished ceiling installation look, enhancing aesthetics and ensuring a clean chimney system finish.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eProper Sizing Guidance:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Refer to the\u003cstrong\u003e \u003c\/strong\u003e\u003c\/span\u003eceiling pitch table to determine the correct support box size for accurate and code-compliant chimney installation planning.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eItem Number\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSeries\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eInside Diameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eA\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e6DP-CS11\u003c\/td\u003e\n\u003ctd\u003eDuraPlus (6\"-8\")\u003c\/td\u003e\n\u003ctd\u003eCeiling Support Box\u003c\/td\u003e\n\u003ctd\u003e6\"\u003c\/td\u003e\n\u003ctd\u003e11\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e6DP-CS24\u003c\/td\u003e\n\u003ctd\u003eDuraPlus (6\"-8\")\u003c\/td\u003e\n\u003ctd\u003eCeiling Support Box\u003c\/td\u003e\n\u003ctd\u003e6\"\u003c\/td\u003e\n\u003ctd\u003e24\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e6DP-CS36\u003c\/td\u003e\n\u003ctd\u003eDuraPlus (6\"-8\")\u003c\/td\u003e\n\u003ctd\u003eCeiling Support Box\u003c\/td\u003e\n\u003ctd\u003e6\"\u003c\/td\u003e\n\u003ctd\u003e36\"\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\u003cspan style=\"text-decoration: underline;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0100\/7917\/4734\/files\/DuraPlus_Brochure.pdf?v=1648525242\" target=\"_blank\"\u003e\u003cstrong\u003eDownload Product Brochure\u003c\/strong\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0100\/7917\/4734\/files\/DuraPlus_Catalog.pdf?v=1648525281\" target=\"_blank\"\u003e\u003cstrong\u003eDownload Product Catalog\u003c\/strong\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0100\/7917\/4734\/files\/DuraPlus_Installation_Manual.pdf?v=1648525317\" target=\"_blank\"\u003e\u003cstrong\u003eDownload Installation Manual\u003c\/strong\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0100\/7917\/4734\/files\/DuraPlus_Installation_Guide.pdf?v=1648525300\" target=\"_blank\"\u003e\u003cstrong\u003eDownload Installation Guide\u003c\/strong\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0100\/7917\/4734\/files\/DuraPlus_Typical_Installation.pdf?v=1648525356\" target=\"_blank\"\u003e\u003cstrong\u003eDownload Typical Installation\u003c\/strong\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCalifornia PROP 65:\u003c\/strong\u003e\u003cspan\u003e This product can expose you to Lead \u0026amp; Chromium, which is known to the State of California to cause cancer and birth defects, or other reproductive harm. See \u003c\/span\u003e\u003ca href=\"https:\/\/usfireplacestore.com\/pages\/ca-prop-65-warning\" target=\"_blank\"\u003eWARNING\u003c\/a\u003e\u003c\/p\u003e","brand":"DuraVent","offers":[{"title":"Square Ceiling Support Box \u0026 Trim Collar - 11\" tall","offer_id":53631894552867,"sku":"6DP-CS11","price":209.0,"currency_code":"USD","in_stock":true},{"title":"Square Ceiling Support Box \u0026 Trim Collar - 24\" tall","offer_id":55292324086051,"sku":"6DP-CS24","price":234.0,"currency_code":"USD","in_stock":true},{"title":"Square Ceiling Support Box \u0026 Trim Collar - 36\" tall","offer_id":55292324118819,"sku":"6DP-CS36","price":489.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0780\/6926\/8771\/files\/DuraVent-DuraPlus-6_-Inner-Diameter-Square-Ceiling-Support-Box-DuraVent-Dreamwood-Living-26087724.jpg?v=1783009931","url":"https:\/\/www.dreamwoodliving.com\/products\/duravent-duraplus-6-inner-diameter-square-ceiling-support-box","provider":"Dreamwood Living","version":"1.0","type":"link"}