{"product_id":"metal-fab-4msc-storm-collar-4-inches-b-vent","title":"Metal-fab 4MSC Storm Collar 4 Inches B-vent","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe METAL-FAB 4MSC is a 4-inch storm collar designed for use with double-wall B-vent pipe systems. Storm collars seal the gap between a vent pipe and the roof penetration, preventing water infiltration at the flashing point. This metal collar is a standard component in gas appliance venting installations and is typically installed by licensed HVAC technicians or plumbers completing a venting system. At approximately 1 pound, the 4MSC is a lightweight, direct-fit solution for 4-inch B-vent pipe runs.\u003c\/p\u003e\n\u003cp\u003eThis storm collar is suited for residential and light commercial gas appliance venting where B-vent double-wall pipe exits through the roof. Common applications include venting for gas furnaces, water heaters, and boilers that use Type B gas vent pipe. It is installed at the roof deck where the vent pipe passes through the roofline, seating against the flashing to create a weather-tight barrier.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eFits 4-inch double-wall B-vent pipe systems\u003c\/li\u003e\n  \u003cli\u003eMetal construction for durable, long-term performance in outdoor roof penetration applications\u003c\/li\u003e\n  \u003cli\u003eSeals the vent-to-flashing gap to prevent moisture intrusion\u003c\/li\u003e\n  \u003cli\u003eLightweight at approximately 1 pound for easy single-tech installation\u003c\/li\u003e\n  \u003cli\u003eStandard OEM-style sizing for compatibility with B-vent pipe runs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or new-installation storm collar for 4-inch double-wall Type B gas vent pipe systems in residential and light commercial venting applications.\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 the International Fuel Gas Code (IFGC) and the appliance manufacturer's venting requirements. Shut down and allow the appliance and vent pipe to cool before handling any vent components. Slide the storm collar over the pipe before seating it against the roof flashing, and seal per local code requirements. Do not install on vent pipe sizes other than those specified.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePipe Size\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVent Type\u003c\/strong\u003e: Double Wall B-Vent\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Metal\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1 pound\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: METAL-FAB\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 4MSC\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"METAL-FAB","offers":[{"title":"Default Title","offer_id":67646687838514,"sku":"4MSC","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/179272590.jpg?v=1790459273","url":"https:\/\/voomisupply.com\/products\/metal-fab-4msc-storm-collar-4-inches-b-vent","provider":"Voomi Supply","version":"1.0","type":"link"}