{"product_id":"southwark-metal-21_26x8-trunk-duct-end-cap-26x8","title":"Southwark Metal 21_26X8 Trunk Duct End Cap 26x8","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SOUTHWARK METAL 21_26X8 is a sheet metal trunk duct end cap designed to close off the open end of a rectangular trunk duct in forced-air HVAC distribution systems. Fabricated from hot dip galvanized steel, this cap provides a durable, corrosion-resistant seal at the terminus of a trunk run measuring 26 inches by 8 inches. HVAC sheet metal contractors and mechanical installers use this component to cap unused or terminal duct ends, preventing air bypass and maintaining system static pressure balance across the distribution network.\u003c\/p\u003e\n\u003cp\u003eThis trunk end cap is used in residential and light commercial forced-air systems where rectangular sheet metal ductwork is installed. It fits a standard 26-inch by 8-inch trunk duct opening and is appropriate for new construction duct fabrication as well as duct modification and retrofit work. Installation typically occurs during rough-in or when a duct run is extended, capped, or reconfigured to adjust airflow distribution.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eHot dip galvanized steel construction resists corrosion in attic, crawlspace, and mechanical room environments\u003c\/li\u003e\n  \u003cli\u003eSized for 26-inch by 8-inch rectangular trunk duct openings\u003c\/li\u003e\n  \u003cli\u003eTrunk-type end cap design provides a flush, airtight closure on open duct terminations\u003c\/li\u003e\n  \u003cli\u003eFabricated to ACCA and SMACNA applicable standards for sheet metal ductwork\u003c\/li\u003e\n  \u003cli\u003eReduces air bypass and helps maintain designed system static pressure\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style sheet metal fitting for rectangular trunk duct systems with a 26-inch by 8-inch cross-section, consistent with SMACNA and ACCA duct construction standards.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by licensed HVAC contractors or qualified sheet metal mechanics following SMACNA duct construction guidelines. Power down the air handling unit before working on the duct system. Secure the end cap using drive cleats or sheet metal screws as appropriate for the duct gauge and application, then seal all joints with UL 181-listed mastic or metal-backed tape per local mechanical code requirements. Do not leave duct ends unsealed during system operation.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Hot Dip Galvanized Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDuct Size\u003c\/strong\u003e: 26 inches x 8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType\u003c\/strong\u003e: Trunk End Cap\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: 21_26X8\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SOUTHWARK METAL","offers":[{"title":"Default Title","offer_id":51284043465010,"sku":"21_26X8","price":21.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/309277191.jpg?v=1781067029","url":"https:\/\/voomisupply.com\/products\/southwark-metal-21_26x8-trunk-duct-end-cap-26x8","provider":"Voomi Supply","version":"1.0","type":"link"}