{"product_id":"southwark-metal-20_28x8-trunk-duct-collar-28x8-in","title":"Southwark Metal 20_28X8 Trunk Duct Collar 28x8 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SOUTHWARK METAL 20_28X8 is a straight, starting-style sheet metal trunk duct collar designed for use in forced-air HVAC duct systems. Fabricated from hot dip galvanized steel, this collar provides a durable, corrosion-resistant connection point where a branch takeoff or trunk line originates from a main duct. It measures 28 inches by 8 inches and conforms to ACCA and SMACNA fabrication standards. HVAC sheet metal mechanics and ductwork installers use this type of collar to establish clean, secure trunk-to-branch transitions in new construction and retrofit applications.\u003c\/p\u003e\n\u003cp\u003eThis collar is suited for residential and light commercial forced-air systems where rectangular trunk duct runs are fabricated or extended. The straight body pattern simplifies installation in confined mechanical spaces and equipment rooms. It is appropriate for supply-side trunk duct assemblies where a starting collar is needed at the air handler, furnace plenum, or rooftop unit discharge. Installers working to SMACNA duct construction standards will find this collar compliant with common sheet metal ductwork specifications.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eHot dip galvanized steel construction for corrosion resistance in conditioned and semi-conditioned spaces\u003c\/li\u003e\n  \u003cli\u003eStraight body pattern for direct trunk duct starting connections\u003c\/li\u003e\n  \u003cli\u003e28 inches by 8 inches size accommodates standard rectangular trunk duct dimensions\u003c\/li\u003e\n  \u003cli\u003eMeets ACCA and SMACNA applicable standards for duct system fabrication\u003c\/li\u003e\n  \u003cli\u003eStarting collar type establishes the trunk duct origin at the supply plenum or air handler outlet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style sheet metal component for use in rectangular trunk duct assemblies built to SMACNA and ACCA standards in residential and light commercial forced-air HVAC systems.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a licensed HVAC technician or qualified sheet metal mechanic. Power down and lock out the air handling equipment before beginning duct work. Secure the collar with sheet metal screws and seal all joints with listed duct sealant or UL 181-rated tape per applicable mechanical codes. Refer to SMACNA duct construction standards for joint reinforcement and support spacing requirements.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSize\u003c\/strong\u003e: 28 inches x 8 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\u003eBody Pattern\u003c\/strong\u003e: Straight\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType\u003c\/strong\u003e: Starting\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplicable Standards\u003c\/strong\u003e: ACCA, SMACNA\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: SOUTHWARK METAL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 20_28X8\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SOUTHWARK METAL","offers":[{"title":"Default Title","offer_id":51284106314034,"sku":"20_28X8","price":47.47,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/309277172.jpg?v=1781068667","url":"https:\/\/voomisupply.com\/products\/southwark-metal-20_28x8-trunk-duct-collar-28x8-in","provider":"Voomi Supply","version":"1.0","type":"link"}