Air Flow Products 84RATD12 Stick-on Takeoff with Damper 12in

Product Description

The AIR FLOW PRODUCTS 84RATD12 is a 12-inch airtight stick-on takeoff fitting designed for round duct pipe with an integrated damper. It connects branch runs directly to flat sheet metal trunk ducts without cutting a collar or using sheet metal screws for the main penetration. The built-in damper allows airflow balancing at the takeoff point, making it a practical solution for residential forced-air distribution systems. HVAC sheet metal installers and duct fabricators use this fitting during new construction or duct retrofit work where airtight performance and flow control at each branch are required.

The 84RATD12 is suited for residential and light commercial forced-air HVAC applications where round branch ducts connect to a flat trunk or plenum surface. The stick-on design speeds up installation by eliminating the need to cut and collar the main duct before attaching the branch takeoff. The integral damper enables zone-level airflow balancing directly at the takeoff, which is useful when tuning multi-branch duct systems for consistent supply air delivery across all registers.

Key Features

• 12-inch round takeoff opening sized for standard round duct connections
• Airtight construction minimizes conditioned air leakage at the branch connection point
• Stick-on mounting method attaches directly to flat sheet metal trunk duct surfaces
• Integrated damper provides airflow balancing capability at the takeoff location
• Eliminates the need to cut a separate collar into the main trunk before installation

Compatibility

Designed as an OEM-style replacement and new-installation fitting for flat sheet metal trunk ducts in residential forced-air distribution systems requiring a 12-inch round branch takeoff with damper.

Installation Notes

Installation should be performed by a licensed HVAC technician or qualified sheet metal installer following local mechanical codes. Power down the air handling unit and close the system before making any duct connections. Secure the fitting to the trunk duct surface per the manufacturer instructions and seal all edges with listed duct sealant or mastic to maintain airtight performance. Do not energize the system until all branch connections are complete and sealed.

Technical Specifications

• Round Opening Size: 12 inches
• Damper: Integrated
• Mounting Type: Stick-On
• Application: Flat Sheet Metal Trunk Duct

Standard Information

• Brand: AIR FLOW PRODUCTS
• Manufacturer Part Number: 84RATD12