{"product_id":"hart-cooley-16404-type-b-gas-vent-round-pipe-7x18-inch","title":"Hart Cooley 16404 Type B Gas Vent Round Pipe 7x18 Inch","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HART COOLEY 16404 is a double-wall, round Type B gas vent pipe designed for natural gas and propane appliance venting applications. It features a 7-inch inner diameter and 8-inch outer diameter, with an 18-inch length. The inner wall is 0.012-inch aluminum and the outer wall is 0.018-inch G90 galvanized steel, forming an insulated annular air space between the two walls. This pipe uses a lock ring end type for secure section-to-section connections. Each case contains 4 sections. Licensed HVAC technicians and gas appliance installers work with this pipe during new venting system builds and service replacements.\u003c\/p\u003e\u003cp\u003eThis pipe is suited for residential and light commercial Type B gas vent systems that exhaust non-positive-pressure, listed gas appliances such as furnaces, boilers, and water heaters. It belongs to the HART COOLEY RP Series and is intended for use as part of a complete B-vent assembly that may include elbows, tees, caps, and supports. The minimum clearance to combustibles is 1 inch, making it appropriate for installations inside framed wall chases and attic spaces where clearance is limited but code-compliant.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eDouble-wall construction: 0.012-inch aluminum inner wall and 0.018-inch G90 galvanized steel outer wall\u003c\/li\u003e\n\u003cli\u003eLock ring end type for fast, secure section connections\u003c\/li\u003e\n\u003cli\u003e7-inch inner diameter with 1-3\/8-inch overlap size for positive engagement\u003c\/li\u003e\n\u003cli\u003eMinimum 1-inch clearance to combustibles per UL 441\u003c\/li\u003e\n\u003cli\u003eTemperature rated to 400 degrees F\u003c\/li\u003e\n\u003cli\u003eSold as 4 sections per case\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement and new-install component within Type B double-wall gas vent systems using HART COOLEY RP Series fittings and accessories.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation must be performed by a licensed HVAC technician or gas appliance installer in accordance with the International Fuel Gas Code (IFGC) and the appliance manufacturer's venting instructions. Shut off the gas supply and allow the appliance to cool completely before servicing any vent section. Maintain the required 1-inch clearance to all combustible materials throughout the vent run. Do not mix this pipe with vent components from other series or manufacturers without verifying dimensional and listing compatibility.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInner Diameter\u003c\/strong\u003e: 7 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOuter Diameter\u003c\/strong\u003e: 8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 18 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInner Wall Material\u003c\/strong\u003e: Aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInner Wall Thickness\u003c\/strong\u003e: 0.012 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOuter Wall Material\u003c\/strong\u003e: G90 Galvanized Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOuter Wall Thickness\u003c\/strong\u003e: 0.018 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Type\u003c\/strong\u003e: Lock Ring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverlap Size\u003c\/strong\u003e: 1-3\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Rating\u003c\/strong\u003e: 400 degrees F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Clearance to Combustibles\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVent Type\u003c\/strong\u003e: Type B Double Wall Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplicable Standard\u003c\/strong\u003e: UL 441\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: RP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 4 pounds (per section)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity Per Case\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: 16404\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HART \u0026 COOLEY","offers":[{"title":"Default Title","offer_id":51619617243442,"sku":"016404","price":58.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/92d5cd76287bbbe42962a053240297d2.jpg?v=1787332507","url":"https:\/\/voomisupply.com\/products\/hart-cooley-16404-type-b-gas-vent-round-pipe-7x18-inch","provider":"Voomi Supply","version":"1.0","type":"link"}