{"product_id":"southwark-metal-atsd_20in-20-inch-round-duct-takeoff","title":"Southwark Metal ATSD_20IN 20 Inch Round Duct Takeoff","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SOUTHWARK METAL ATSD_20IN is a round sheet metal duct takeoff fitting designed for branch connections in forced-air HVAC distribution systems. Built from hot dip galvanized steel, this Air-Tite unit measures 20 inches in diameter and ships with an integrated scoop and damper. The scoop improves airflow capture from the main trunk, while the damper allows for manual balancing of supply air to individual zones. HVAC sheet metal mechanics and duct installers use this fitting in new construction and retrofit ductwork where a controlled, sealed branch tap is required.\u003c\/p\u003e\n\u003cp\u003eThis takeoff is suited for residential and light commercial forced-air systems where a 20-inch round branch connection is called for. The Air-Tite construction supports low-leakage duct system requirements. The included damper makes it practical for zoning applications or systems where individual branch airflow balancing is part of the design. Installed in accordance with SMACNA and ACCA standards, it fits into trunk-and-branch duct layouts common in both horizontal and vertical air handler configurations.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eHot dip galvanized steel construction resists corrosion in typical mechanical room and plenum environments\u003c\/li\u003e\n  \u003cli\u003eAir-Tite design supports low-leakage duct assemblies\u003c\/li\u003e\n  \u003cli\u003eIntegrated scoop improves airflow capture from the main trunk duct\u003c\/li\u003e\n  \u003cli\u003eIncluded damper allows manual airflow balancing at the branch\u003c\/li\u003e\n  \u003cli\u003eRound 20-inch diameter fits standard round duct and collar connections\u003c\/li\u003e\n  \u003cli\u003eManufactured to ACCA and SMACNA applicable standards\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 in residential and light commercial forced-air HVAC duct systems requiring a 20-inch round branch takeoff connection.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified sheet metal mechanic or licensed HVAC contractor. Power down the air handling system completely before cutting into an existing trunk or plenum. Secure the takeoff collar to the trunk using sheet metal screws and seal all joints with UL 181-listed mastic or foil tape to meet SMACNA leakage class requirements. Verify damper operation and set blade position before closing out the installation.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Hot Dipped Galvanized Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType\u003c\/strong\u003e: Air-Tite, Round\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter (Size A)\u003c\/strong\u003e: 20 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter (Size B)\u003c\/strong\u003e: 20 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInclusions\u003c\/strong\u003e: Scoop, Damper\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: ATSD_20IN\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SOUTHWARK METAL","offers":[{"title":"Default Title","offer_id":51284081508658,"sku":"ATSD_20IN","price":128.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/309278227.jpg?v=1781068048","url":"https:\/\/voomisupply.com\/products\/southwark-metal-atsd_20in-20-inch-round-duct-takeoff","provider":"Voomi Supply","version":"1.0","type":"link"}