{"product_id":"selkirk-105307-rv-increaser-5-to-7-inch","title":"Selkirk 105307 Rv Increaser 5 to 7 Inch","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SELKIRK 105307 is a Type B gas vent increaser fitting designed to transition a 5-inch diameter vent connector to a 7-inch diameter vent pipe. This increaser is used in residential and light commercial B-vent systems where the vent diameter must step up to match a larger vent section or appliance draft hood outlet. Licensed HVAC technicians and plumbers install this fitting as part of properly sized natural draft venting systems for gas-fired appliances including furnaces, boilers, and water heaters.\u003c\/p\u003e\n\u003cp\u003eThis fitting is appropriate for Type B double-wall gas vent installations where code-compliant sizing requires an increase in vent diameter along the vent connector run. It transitions from a 5-inch inlet to a 7-inch outlet, allowing the vent system to meet the capacity requirements of the connected appliance without a full vent system replacement. It is suited for indoor venting applications governed by NFPA 54 and local mechanical codes.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eTransitions 5-inch B-vent to 7-inch B-vent in a single fitting\u003c\/li\u003e\n  \u003cli\u003eDesigned for Type B double-wall gas vent systems\u003c\/li\u003e\n  \u003cli\u003eSupports proper draft sizing in natural-draft gas appliance installations\u003c\/li\u003e\n  \u003cli\u003eOEM-style fit for standard B-vent connector assemblies\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or system component for Type B double-wall gas vent installations requiring a 5-inch to 7-inch diameter increase.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a licensed HVAC technician or plumber in accordance with NFPA 54 and applicable local mechanical codes. Shut off the gas supply and allow the appliance to cool completely before disconnecting any vent sections. Ensure all joints are secured per the manufacturer fitting instructions and that the completed vent system is inspected for proper draft before returning the appliance to service.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInlet Diameter\u003c\/strong\u003e: 5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutlet Diameter\u003c\/strong\u003e: 7 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVent Type\u003c\/strong\u003e: Type B Gas Vent\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer\u003c\/strong\u003e: SELKIRK\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: SELKIRK\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 105307\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SELKIRK","offers":[{"title":"Default Title","offer_id":51138281668914,"sku":"105307","price":58.44,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/305532971.jpg?v=1778252421","url":"https:\/\/voomisupply.com\/products\/selkirk-105307-rv-increaser-5-to-7-inch","provider":"Voomi Supply","version":"1.0","type":"link"}