Air Flow Products 84DB1512 Duct Board Tab Takeoff

Product Description

The AIR FLOW PRODUCTS 84DB1512 is a duct board tab takeoff fitting designed for branch connections in fiberglass duct board HVAC systems. This fitting provides a secure, tab-locking attachment point where a branch duct or collar connects to a main duct board trunk. It measures 12 inches in diameter with a 1.5-inch tab depth, allowing it to seat firmly into the duct board surface without fasteners in many standard installations. HVAC installers and sheet metal mechanics use this fitting during new construction and retrofit ductwork fabrication.

This takeoff is intended for use with 84-series duct board systems in residential and light commercial forced-air applications. It is suited for supply-side branch connections where the main trunk is constructed from rigid fiberglass duct board. The tab design locks into a pre-cut opening in the duct board face, creating a tight mechanical connection that supports proper airflow distribution throughout the system.

Key Features

• 12-inch diameter opening for standard branch duct connections
• 1.5-inch tab depth for secure mechanical lock into duct board
• Tab design eliminates need for additional mechanical fasteners at the connection point in many installations
• Compatible with 84-series duct board construction methods
• Supports clean, consistent branch takeoff geometry for balanced airflow

Compatibility

Designed as an OEM-style tab takeoff for use with 84-series fiberglass duct board trunk systems in residential and light commercial forced-air HVAC installations.

Installation Notes

Installation is typically performed by licensed HVAC technicians or qualified sheet metal mechanics. Power down the air handling unit and close the supply damper before making any duct modifications. The tab takeoff requires a correctly sized cutout in the duct board face; use a sharp utility knife or duct board cutting tool and follow the manufacturer's layout template for accurate sizing. Seal all joints with UL 181B-rated tape or mastic per local mechanical code requirements.

Technical Specifications

• Diameter: 12 inches
• Tab Depth: 1.5 inches
• Series: 84DB

Standard Information

• Brand: AIR FLOW PRODUCTS
• Manufacturer Part Number: 84DB1512