{"product_id":"hart-cooley-7r12-type-b-vent-round-pipe-7in-1ft","title":"Hart Cooley 7r12 Type B Vent Round Pipe 7in 1ft","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HART COOLEY 7r12 is a double-wall Type B gas vent round pipe designed for Category 1 appliance venting applications. It features an aluminum inner wall and a galvanized steel outer wall, a construction that manages flue gas temperatures while reducing the risk of condensation in the vent liner. This pipe section measures 7 inches in diameter and 1 foot in length and weighs 2.5 pounds. Licensed HVAC technicians and plumbers install this pipe as part of listed B-vent systems serving natural gas and propane appliances in residential and light commercial settings.\u003c\/p\u003e\n\u003cp\u003eThe 7r12 is used in Category 1 venting systems, which handle non-positive-pressure appliances that produce flue gases at or above their dew point. Typical applications include gas furnaces, water heaters, boilers, and other atmospherically vented appliances routed through interior chases or vertical vent stacks. The 7-inch diameter and 1-foot section length make it a standard building-block component for assembling or extending an existing B-vent run.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eDouble-wall construction with aluminum inner wall for corrosion resistance against flue gases\u003c\/li\u003e\n  \u003cli\u003eGalvanized steel outer wall provides structural durability and exterior protection\u003c\/li\u003e\n  \u003cli\u003e7-inch diameter suits a wide range of residential and light commercial Category 1 appliances\u003c\/li\u003e\n  \u003cli\u003e1-foot section length for precise vent system layout and tight-space fitting\u003c\/li\u003e\n  \u003cli\u003eRound pipe shape for compatibility with standard B-vent fittings, elbows, and terminations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in listed double-wall Type B gas vent systems serving Category 1 natural gas and propane appliances. Components must be from the same listed B-vent system; do not mix components from different listed vent system manufacturers within the same vent run.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation must be performed by a qualified HVAC technician or plumber in accordance with the appliance manufacturer instructions, NFPA 54 (National Fuel Gas Code), and all applicable local codes. Shut off the gas supply and allow the appliance to cool completely before servicing or modifying an existing vent system. Maintain required clearances to combustibles as specified by the vent system listing and local building codes. Do not use Type B vent pipe for Category 2, 3, or 4 appliances or for venting solid-fuel-burning equipment.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVent Category\u003c\/strong\u003e: Category 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter\u003c\/strong\u003e: 7 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 12 inches (1 foot)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePipe Shape\u003c\/strong\u003e: Round\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWall Construction\u003c\/strong\u003e: Double Wall\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInner Material\u003c\/strong\u003e: Aluminum\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOuter Material\u003c\/strong\u003e: Galvanized Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 2.5 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: HART COOLEY\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 7r12\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HART \u0026 COOLEY","offers":[{"title":"Default Title","offer_id":51233590772018,"sku":"7R12","price":50.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/307628986.jpg?v=1780104071","url":"https:\/\/voomisupply.com\/products\/hart-cooley-7r12-type-b-vent-round-pipe-7in-1ft","provider":"Voomi Supply","version":"1.0","type":"link"}