{"product_id":"southwark-metal-55_12in-duct-tee-end-cap-12-inch","title":"Southwark Metal 55_12IN Duct Tee End Cap 12 Inch","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SOUTHWARK METAL 55_12IN is a 12-inch diameter sheet metal duct tee end cap designed to terminate open tee branches in forced-air duct systems. Constructed from hot dip galvanized steel, this cap provides corrosion resistance suited to both supply and return air applications. The crimped end design allows it to slip over the branch opening of a standard round duct tee fitting, creating a clean, secure closure. HVAC installers use this cap when a tee branch is not connected to a downstream run and must be sealed off to maintain system static pressure and airflow balance. The galvanized finish meets the durability expectations of residential and light commercial ductwork environments.\u003c\/p\u003e\n\u003cp\u003eThis tee end cap is used in residential and light commercial HVAC duct installations wherever a round sheet metal tee branch requires capping. Typical scenarios include partially staged system layouts, unused branch takeoffs, and duct modifications where a branch has been decommissioned. It is installed as part of low-pressure supply or return air duct assemblies fabricated from round sheet metal fittings. Fabricators and sheet metal installers working to SMACNA and ACCA standards will find this fitting consistent with those guidelines.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e12-inch diameter fits standard round duct tee branch openings\u003c\/li\u003e\n  \u003cli\u003eHot dip galvanized steel construction provides corrosion resistance for long service life\u003c\/li\u003e\n  \u003cli\u003eCrimped end design seats over the tee branch opening for a snug mechanical fit\u003c\/li\u003e\n  \u003cli\u003eManufactured to ACCA and SMACNA applicable standards\u003c\/li\u003e\n  \u003cli\u003eSuitable for low-pressure residential and light commercial forced-air 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 use with standard 12-inch diameter round duct tee fittings in residential and light commercial forced-air HVAC systems fabricated to SMACNA and ACCA standards.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by licensed sheet metal workers or HVAC technicians as part of duct fabrication or modification work. Power down the air handling unit and ensure the system is depressurized before capping or modifying duct branches. Secure the cap with sheet metal screws and seal all joints with UL 181-listed duct tape or mastic sealant per SMACNA guidelines to prevent air leakage. Follow local mechanical codes for duct construction and sealing requirements.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter\u003c\/strong\u003e: 12 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\u003eEnd Type\u003c\/strong\u003e: Crimped\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: 55_12IN\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SOUTHWARK METAL","offers":[{"title":"Default Title","offer_id":51284006928690,"sku":"55_12IN","price":20.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/309277436.jpg?v=1781065826","url":"https:\/\/voomisupply.com\/products\/southwark-metal-55_12in-duct-tee-end-cap-12-inch","provider":"Voomi Supply","version":"1.0","type":"link"}