{"product_id":"duravent-b-vent-45-degree-elbow","title":"Duravent B-Vent 45 Degree Elbow","description":"\u003cp\u003e\u003cb\u003eThe Duravent Model BV 45 degree elbow offsets a round Type B gas vent run around obstructions such as rafters and joists.\u003c\/b\u003e The 6\" and 8\" elbows are three-piece adjustable elbows that rotate 360 degrees for alignment, the 10\" and 12\" elbows adjust from 0 to 45 degrees, and the 16\" elbow is a fixed 45. For listed Category I gas appliances.\u003c\/p\u003e\n\u003ch2\u003eAt a glance\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e6\" to 16\"\u003c\/strong\u003e: Diameters listed here\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e0 to 45 degrees\u003c\/strong\u003e: Adjustable on 10\" and 12\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\" clearance\u003c\/strong\u003e: To combustibles, USA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory I gas only\u003c\/strong\u003e: Natural gas or LP\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eDetails\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart numbers\u003c\/th\u003e\n\u003ctd\u003e6BVL45, 8BVL45, 10BVL45-1, 12BVL45-1, 16BVL45\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e6\" and 8\"\u003c\/th\u003e\n\u003ctd\u003eThree-piece adjustable elbow, rotates 360 degrees\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e10\" and 12\"\u003c\/th\u003e\n\u003ctd\u003eAdjusts 0 to 45 degrees, DuraTab joint\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e16\"\u003c\/th\u003e\n\u003ctd\u003eFixed 45 degrees, not adjustable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOffset (10\", 12\")\u003c\/th\u003e\n\u003ctd\u003eTwo 45 degree elbows give a 7-1\/4\" offset before added lengths\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eUse\u003c\/th\u003e\n\u003ctd\u003eOffsets around rafters, joists and other obstructions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eListed for\u003c\/th\u003e\n\u003ctd\u003eListed natural gas or LP Category I gas appliances with draft hoods, and appliances listed for Type B gas vent, with flue gases no hotter than 470°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNot for\u003c\/th\u003e\n\u003ctd\u003eCategory II, III or IV gas appliances, pressure-tight or liquid-tight vent systems, wood, pellet, coal or oil burning appliances, high-temperature exhaust\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eClearance\u003c\/th\u003e\n\u003ctd\u003e1\" to combustibles (USA, 3\" to 30\" round)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCertification\u003c\/th\u003e\n\u003ctd\u003eUL 441 and CAN\/ULC-S605\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eDuravent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eType B vent is for listed Category I gas appliances only.\u003c\/strong\u003e Duravent lists Model BV for natural gas or LP Category I appliances with draft hoods, and appliances listed for Type B gas vent. Do not use it on wood, pellet, coal or oil burning appliances, on Category II, III or IV gas appliances, or for high-temperature exhaust. A licensed gas professional should install the vent and make the gas connection to the instructions, NFPA 54 and local codes.\u003c\/p\u003e\n\u003ch2\u003eQuestions people ask us\u003c\/h2\u003e\u003ch3\u003eHow much offset do two elbows give?\u003c\/h3\u003e\u003cp\u003eOn 10\" and 12\" vent, two 45 degree elbows joined directly give a \u003cb\u003e7-1\/4\"\u003c\/b\u003e offset, per Duravent's offset table. Add straight \u003ca href=\"\/products\/duravent-b-vent-round-pipe\"\u003epipe\u003c\/a\u003e between them for more.\u003c\/p\u003e\u003ch3\u003eIs the 16\" elbow adjustable?\u003c\/h3\u003e\u003cp\u003eNo. Duravent makes 16\" and larger 45 degree elbows as fixed elbows. The 10\" to 14\" elbows adjust from 0 to 45 degrees.\u003c\/p\u003e\u003ch3\u003eCan I use this on a wood stove, pellet stove or oil furnace?\u003c\/h3\u003e\u003cp\u003eNo. Duravent lists Model BV Type B gas vent for \u003cb\u003elisted natural gas or LP Category I gas appliances\u003c\/b\u003e with draft hoods and appliances listed for Type B vent, with flue gases up to \u003cb\u003e470°F\u003c\/b\u003e. Its catalog warns that oil or wood burning appliances can damage the vent, and it is not for Category II, III or IV gas appliances. Wood and pellet appliances need a chimney or vent system listed for them.\u003c\/p\u003e\u003ch3\u003eWhat does the -1 at the end of the 10\" and 12\" part numbers mean?\u003c\/h3\u003e\u003cp\u003eIn Duravent's current Model BV catalog the 10\" and 12\" parts carry a \u003cb\u003e-1\u003c\/b\u003e suffix, for example 10BV12-1, and join with the \u003cb\u003eDuraTab\u003c\/b\u003e method: align the notches, slide together and press in the tab. Duravent's earlier catalog listed the same sizes without the suffix and with a DuraLock snap-in joint. Duravent's instructions do not cover mixing the two, so \u003ca href=\"\/pages\/contact-us\"\u003eask us\u003c\/a\u003e before joining a -1 part to older 10\" or 12\" pipe.\u003c\/p\u003e\u003ch3\u003eWho should install it?\u003c\/h3\u003e\u003cp\u003eDuravent warrants the vent fully only when a professional installer puts it in. A licensed gas professional should install the system to Duravent's instructions, NFPA 54 (the National Fuel Gas Code) and local codes. The appliance manufacturer's manual decides which venting is approved and the vent size and layout, so \u003ca href=\"\/pages\/contact-us\"\u003esend us the appliance model\u003c\/a\u003e and we will check.\u003c\/p\u003e","brand":"Duravent","offers":[{"title":"6\"","offer_id":67631395766546,"sku":"B6BVL45","price":87.53,"currency_code":"USD","in_stock":true},{"title":"8\"","offer_id":67631395799314,"sku":"B8BVL45","price":148.51,"currency_code":"USD","in_stock":true},{"title":"10\"","offer_id":67631395832082,"sku":"B10BVL45-1","price":367.6,"currency_code":"USD","in_stock":true},{"title":"12\"","offer_id":67631395864850,"sku":"B12BVL45-1","price":428.75,"currency_code":"USD","in_stock":true},{"title":"16\"","offer_id":67631395897618,"sku":"B16BVL45","price":819.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/2279\/1186\/files\/duravent-b-vent-45-degree-elbow.jpg?v=1792597877","url":"https:\/\/www.aquaterrabackyard.com\/products\/duravent-b-vent-45-degree-elbow","provider":"Aqua Terra Backyard","version":"1.0","type":"link"}