Air Flow Products 84DBD05 Duct Board Tab Takeoff 5in

Product Description

The AIR FLOW PRODUCTS 84DBD05 is a 5-inch duct board tab takeoff fitting with an integrated damper, designed for use in low-pressure residential and light commercial forced-air HVAC distribution systems. The tab-style design allows the fitting to be seated and secured directly into duct board without requiring sheet metal tools or mechanical fasteners, making field installation straightforward. The built-in damper gives the installer airflow control at the branch point, useful for balancing supply runs during commissioning. HVAC technicians and sheet metal installers are the primary trades who handle this fitting.

This fitting is suited for new construction duct systems and retrofit branch additions where the main trunk or plenum is fabricated from rigid fiberglass duct board. The 5-inch collar size matches standard 5-inch round flexible duct or rigid branch connections. It is commonly installed at the supply trunk to feed individual room runs in residential single-family and light commercial applications where duct board construction is specified.

Key Features

• Integrated damper allows airflow balancing at the branch takeoff point without a separate damper fitting
• Tab-style mounting seats directly into duct board for tool-free field installation
• 5-inch collar size accepts standard 5-inch round flex duct or rigid branch connections
• Designed for low-pressure forced-air supply duct systems

Compatibility

Designed as an OEM-style replacement and new-installation fitting for rigid fiberglass duct board supply systems using 5-inch round branch connections.

Installation Notes

Installation should be performed by a qualified HVAC technician or sheet metal installer in accordance with SMACNA duct construction standards and local mechanical codes. Shut down the air handling unit and confirm the system is depressurized before cutting into an existing duct board trunk. Score and cut the duct board opening to match the tab dimensions per the fitting instructions, seat the tabs firmly, and seal all edges with approved UL 181B-rated tape or mastic. Do not overtighten or deform the collar during fitting insertion, as this can restrict the damper blade movement.

Technical Specifications

• Collar Diameter: 5 inches
• Fitting Type: Tab Takeoff with Damper
• Application: Duct Board Supply Systems

Standard Information

• Brand: AIR FLOW PRODUCTS
• Manufacturer Part Number: 84DBD05