Air Flow Products 84DB208 Duct Board Tab Takeoff 8 in

Product Description

The AIR FLOW PRODUCTS 84DB208 is an 8-inch duct board tab takeoff fitting with an integrated damper, designed for use in residential and light commercial duct distribution systems. This fitting connects branch ducts to duct board trunk lines using a tab-style locking mechanism, providing a secure, low-leakage connection without adhesive. The built-in damper allows airflow balancing at the branch point, giving installers control over zone distribution without adding a separate balancing damper downstream. HVAC installers and sheet metal technicians are the primary trades who work with this fitting during new construction and retrofit duct fabrication.

This fitting is used with duct board trunk systems where branch takeoffs are required at supply air distribution points. The tab design is compatible with standard duct board fabrication practices, allowing the fitting to be inserted and locked into a field-cut opening in the duct board panel. The integral damper is useful in multi-branch systems where airflow balancing across supply runs is needed. Typical applications include residential forced-air systems and light commercial HVAC installations where duct board is the primary trunk material.

Key Features

• 8-inch diameter branch connection for standard round duct or flex duct attachment
• Integrated damper for on-site airflow balancing at the branch takeoff point
• Tab-style locking design secures to duct board trunk without adhesive
• Suits new construction and retrofit duct board system installations
• Eliminates need for a separate balancing damper on the branch run

Compatibility

Designed as an OEM-style replacement and new-installation fitting for duct board trunk systems requiring an 8-inch tab-style branch takeoff with damper.

Installation Notes

Installation should be performed by a licensed HVAC technician or qualified sheet metal installer. Shut down the air handling system and verify the system is de-energized before cutting into any existing duct board trunk. The takeoff opening in the duct board panel should be sized to match the fitting tab pattern per the manufacturer instructions to ensure a secure, low-leakage fit. Work should comply with applicable mechanical codes, including SMACNA duct construction standards and local jurisdiction requirements.

Technical Specifications

• Diameter: 8 inches
• Type: Tab Takeoff with Damper
• Application: Duct Board Trunk Systems

Standard Information

• Brand: AIR FLOW PRODUCTS
• Manufacturer Part Number: 84DB208