Air Flow Products 84DB12 Duct Board Tab Takeoff 12 in

Product Description

The AIR FLOW PRODUCTS 84DB12 is a duct board tab takeoff fitting designed for use in low-pressure air distribution systems. This 12-inch fitting connects branch ducts to a main duct board trunk, allowing conditioned air to be directed from the primary supply plenum into individual branch runs. It is installed by sheet metal mechanics and HVAC technicians during new construction and retrofit duct system builds. The tab-style design secures directly to duct board panels without additional hardware, providing a clean, reliable connection point in fiberglass duct board assemblies.

This fitting is suited for residential and light commercial HVAC applications where fiberglass duct board is the primary distribution medium. It is used in forced-air heating and cooling systems where a branch takeoff is needed at the trunk line. The 12-inch sizing accommodates larger branch duct runs serving zones that require higher airflow volume. HVAC installers typically use this fitting during rough-in of duct systems before grilles and registers are set.

Key Features

• 12-inch diameter for high-volume branch duct connections
• Tab-style mounting integrates directly with fiberglass duct board panels
• Designed for low-pressure air distribution systems
• Supports clean branch takeoff connections from main trunk lines
• Compatible with standard duct board construction techniques

Compatibility

Designed as an OEM-style replacement and new-installation fitting for fiberglass duct board trunk and branch systems in residential and light commercial forced-air HVAC applications.

Installation Notes

Installation is performed by licensed HVAC technicians or qualified sheet metal mechanics. Power down the air handling unit and verify the system is de-energized before working inside the duct system. Follow local mechanical codes and SMACNA guidelines for duct board construction and takeoff placement. Seal all connections with approved duct board adhesive or foil tape rated for the application.

Technical Specifications

• Size: 12 inches
• Fitting Type: Tab Takeoff
• Duct System Type: Duct Board

Standard Information

• Brand: AIR FLOW PRODUCTS
• Manufacturer Part Number: 84DB12