{"product_id":"air-flow-products-840-3-ratd20-000012-airtight-takeoff-12-in","title":"Air Flow Products 840-3-RATD20-000012 Airtight Takeoff 12 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe AIR FLOW PRODUCTS 840-3-RATD20-000012 is an airtight stick-on takeoff fitting designed for round duct pipe installations that require a built-in damper. This fitting measures 12 inches in diameter with a 2-inch standoff, allowing it to mount directly onto round trunk lines while maintaining an airtight seal. The integrated damper gives technicians direct airflow control at the branch point without the need for a separate balancing component. HVAC installers use this fitting in residential and light commercial forced-air duct systems where branch takeoff sealing and airflow regulation are required at the same point.\u003c\/p\u003e\n\u003cp\u003eThis takeoff is suited for round pipe duct systems where branch runs need to be tapped off a main trunk with minimal leakage. The stick-on mounting method allows the fitting to bond directly to the duct surface, making it practical in tight plenum spaces or where cutting in a traditional collar fitting is not practical. The 2-inch standoff height provides clearance for flex duct or hard-pipe connections at the branch. This product is appropriate for new construction duct installations as well as retrofit and rebalancing work performed by licensed HVAC technicians.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eAirtight stick-on design bonds directly to round duct trunk lines without screws or sheet metal work\u003c\/li\u003e\n  \u003cli\u003eIntegrated damper allows airflow regulation at the takeoff point\u003c\/li\u003e\n  \u003cli\u003e12-inch diameter opening accommodates standard round branch duct sizing\u003c\/li\u003e\n  \u003cli\u003e2-inch standoff provides clearance for flex duct or hard-pipe branch connections\u003c\/li\u003e\n  \u003cli\u003eDesigned to minimize duct leakage at branch takeoff locations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement and new-installation fitting for round pipe forced-air duct systems requiring an airtight stick-on takeoff with an integral damper.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a licensed HVAC technician. Power down the air handler or furnace and close the system before cutting into or modifying ductwork. Clean and dry the duct surface thoroughly before applying the stick-on fitting to ensure a proper airtight bond. Verify local mechanical codes for duct sealing and balancing requirements prior to installation.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePipe Diameter\u003c\/strong\u003e: 12 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandoff Height\u003c\/strong\u003e: 2 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDamper\u003c\/strong\u003e: Included\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMounting Type\u003c\/strong\u003e: Stick-On\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDuct Type\u003c\/strong\u003e: Round Pipe\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: AIR FLOW PRODUCTS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 840-3-RATD20-000012\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"AIR FLOW PRODUCTS","offers":[{"title":"Default Title","offer_id":51344926867762,"sku":"840-3-RATD20-000012","price":45.76,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/310554435.jpg?v=1782045771","url":"https:\/\/voomisupply.com\/products\/air-flow-products-840-3-ratd20-000012-airtight-takeoff-12-in","provider":"Voomi Supply","version":"1.0","type":"link"}