Air Flow Products 84DB08 Duct Board Tab Takeoff 8 in

Product Description

The AIR FLOW PRODUCTS 84DB08 is an 8-inch duct board tab takeoff designed for connecting branch ducts to duct board trunk lines in low-pressure residential and light commercial HVAC distribution systems. Tab takeoffs in the 84DB series use a tabbed collar design that inserts directly into a field-cut opening in duct board, allowing for a secure mechanical connection without additional fasteners. HVAC sheet metal installers and duct fabricators use this fitting during new construction and retrofit ductwork runs where duct board is the primary trunk material.

This fitting is suited for residential forced-air systems and light commercial applications where duct board trunk construction is standard practice. The 8-inch size accommodates branch runs that serve individual zones or larger supply registers. It is typically installed during the rough-in phase of HVAC work before insulation and finishing work is completed.

Key Features

• 8-inch diameter tab takeoff sized for standard branch duct runs
• Tab collar design locks into duct board without additional fasteners
• Compatible with duct board trunk line construction
• Suitable for low-pressure residential and light commercial HVAC systems
• Part of the 84DB series of duct board fittings from AIR FLOW PRODUCTS

Compatibility

Designed as an OEM-style fitting for use with duct board trunk systems in residential and light commercial forced-air HVAC distribution applications.

Installation Notes

Installation is performed by licensed HVAC technicians or qualified duct fabricators. Power down the air handling unit and close the system disconnect before working on supply ductwork. Use a proper duct board knife and straightedge to cut a clean, correctly sized opening in the trunk board before inserting the tab collar. Seal all connections with UL 181-rated mastic or approved tape per local mechanical codes.

Technical Specifications

• Diameter: 8 inches
• Series: 84DB
• Application: Duct Board Tab Takeoff

Standard Information

• Brand: AIR FLOW PRODUCTS
• Manufacturer Part Number: 84DB08