{"product_id":"southwark-metal-21_8x8-trunk-duct-end-cap-8x8-galvanized","title":"Southwark Metal 21_8X8 Trunk Duct End Cap 8x8 Galvanized","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SOUTHWARK METAL 21_8X8 is a sheet metal trunk duct end cap designed to close off the open end of a rectangular trunk duct in forced-air HVAC duct systems. Fabricated from hot dip galvanized steel, this cap provides a durable, corrosion-resistant termination point for 8 x 8 inch trunk duct sections. It prevents air bypass and maintains system static pressure at the end of a supply or return trunk run. HVAC sheet metal mechanics and duct fabricators install this fitting as part of a complete duct assembly on new construction or retrofit projects.\u003c\/p\u003e\n\u003cp\u003eThis end cap is used on rectangular trunk duct systems in residential and light commercial forced-air applications. It fits 8 x 8 inch trunk duct openings and is appropriate for supply or return air trunk terminations where the duct run ends at a wall, floor, or attic boundary. Installation typically occurs during rough-in duct work before system startup.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eHot dip galvanized steel construction for corrosion resistance in attic, crawlspace, and mechanical room environments\u003c\/li\u003e\n  \u003cli\u003eSized for 8 x 8 inch trunk duct openings\u003c\/li\u003e\n  \u003cli\u003eCloses off trunk duct ends to prevent air bypass and maintain system pressure balance\u003c\/li\u003e\n  \u003cli\u003eMeets ACCA and SMACNA applicable standards for sheet metal duct construction\u003c\/li\u003e\n  \u003cli\u003eTrunk-type fitting for rectangular duct systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style sheet metal fitting for 8 x 8 inch rectangular trunk duct systems built to ACCA and SMACNA standards in residential and light commercial forced-air HVAC applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by licensed HVAC technicians or qualified sheet metal mechanics. Shut down and de-energize the air handling unit before working on the duct system. The cap is typically secured with sheet metal screws and sealed with UL 181-listed duct mastic or foil tape to meet code requirements. Follow SMACNA duct construction standards and local mechanical codes for fastener spacing and sealing requirements.\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: 8 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_8X8\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SOUTHWARK METAL","offers":[{"title":"Default Title","offer_id":51284130431282,"sku":"21_8X8","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/309277235.jpg?v=1781069335","url":"https:\/\/voomisupply.com\/products\/southwark-metal-21_8x8-trunk-duct-end-cap-8x8-galvanized","provider":"Voomi Supply","version":"1.0","type":"link"}