Air Flow Products 84DBD08 Duct Board Tab Takeoff 8 in

Product Description

The AIR FLOW PRODUCTS 84DBD08 is an 8-inch duct board tab takeoff fitting with an integrated damper, designed for use in low-pressure residential and light commercial air distribution systems. This fitting connects branch ducts to duct board trunk lines and includes a built-in damper for airflow balancing at the takeoff point. HVAC installers and sheet metal mechanics use this type of fitting during new construction and retrofit ductwork installations where duct board is the primary trunk material.

This fitting is suited for duct board trunk systems where branch taps require both a secure mechanical connection and the ability to regulate airflow. The tab-style collar seats against the duct board surface and is secured by friction tabs, making installation straightforward without the need for sheet metal screws at the collar interface. The integrated damper allows the technician to partially or fully restrict airflow at the branch point to assist with system balancing after installation.

Key Features

• 8-inch diameter takeoff sized for standard round branch duct connections
• Integrated damper allows airflow balancing at the branch without a separate fitting
• Tab-style collar designed for direct installation into duct board trunk lines
• Eliminates the need for a separate damper collar in branch balancing applications

Compatibility

Designed as an OEM-style replacement and new-installation fitting for duct board trunk and branch air distribution systems using 8-inch round branch duct connections.

Installation Notes

Installation is performed by licensed HVAC technicians or sheet metal mechanics working on duct board air distribution systems. The air handling unit or furnace blower must be shut off and the system de-energized before cutting into an existing duct board trunk line to add or replace a takeoff. Follow local mechanical codes and ACCA Manual D guidelines for branch duct sizing and takeoff placement. Do not overtighten or force the tab collar, as duct board surfaces can delaminate if the fitting is improperly seated.

Technical Specifications

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

Standard Information

• Brand: AIR FLOW PRODUCTS
• Manufacturer Part Number: 84DBD08