{"product_id":"southwark-metal-142_4in-duct-storm-collar-4-inch","title":"Southwark Metal 142_4IN Duct Storm Collar 4 Inch","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SOUTHWARK METAL 142_4IN is a 4-inch sheet metal duct storm collar designed to seal the annular gap where a flue pipe or vent pipe penetrates a roof deck. Fabricated from hot dip galvanized steel, this collar provides corrosion resistance in outdoor and rooftop exposure. It is a standard component in residential and light commercial HVAC and gas venting installations. HVAC technicians and sheet metal contractors install this collar as part of a compliant roof penetration assembly to prevent water intrusion around the duct or vent stack.\u003c\/p\u003e\u003cp\u003eThis storm collar is suited for use on 4-inch round duct or flue pipe roof penetrations in residential and light commercial construction. It fits standard B-vent, single-wall flue pipe, and round duct assemblies that exit through a sloped or flat roof. The collar is positioned above the roof flashing to direct water away from the penetration point, making it a common part of code-compliant venting systems built to ACCA and SMACNA standards.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eHot dip galvanized steel construction resists corrosion at rooftop and exterior exposures\u003c\/li\u003e\n\u003cli\u003e4-inch size fits standard round duct and flue pipe roof penetrations\u003c\/li\u003e\n\u003cli\u003eMeets ACCA and SMACNA applicable standards for sheet metal duct and venting work\u003c\/li\u003e\n\u003cli\u003eDesigned for use with roof flashing to form a weathertight penetration assembly\u003c\/li\u003e\n\u003cli\u003eStraightforward slip-on installation for new construction and replacement service calls\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement and standard-fit component for 4-inch round duct and flue pipe roof penetration assemblies in residential and light commercial HVAC and venting systems.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is typically performed by a licensed HVAC technician or sheet metal contractor as part of a roof penetration assembly. The collar is slipped over the pipe above the roof flashing and sealed to prevent water infiltration. Shut down and lock out the connected HVAC or combustion appliance before working on any vent or flue penetration. Work should conform to SMACNA duct construction standards and applicable local mechanical codes.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Hot Dip Galvanized Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType\u003c\/strong\u003e: Storm Collar\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplicable Standards\u003c\/strong\u003e: ACCA, SMACNA\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: SOUTHWARK METAL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 142_4IN\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SOUTHWARK METAL","offers":[{"title":"Default Title","offer_id":51283987235122,"sku":"142_4IN","price":17.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/309277006.jpg?v=1781065167","url":"https:\/\/voomisupply.com\/products\/southwark-metal-142_4in-duct-storm-collar-4-inch","provider":"Voomi Supply","version":"1.0","type":"link"}