Southwark Metal ATT_8IN Duct Takeoff 8 Inch Air-tite

Product Description

The SOUTHWARK METAL ATT_8IN is an 8-inch diameter Air-Tite sheet metal duct takeoff fabricated from hot dip galvanized steel. Duct takeoffs connect branch ducts to a main trunk line, allowing conditioned air to be distributed to individual zones or rooms within a forced-air system. This fitting is built to ACCA and SMACNA standards, making it a reliable choice for duct systems that require consistent airflow performance and structural integrity. HVAC installers and sheet metal contractors use this type of fitting in both new construction and retrofit applications where a tight, secure branch connection is required.

This takeoff is suited for residential and light commercial forced-air HVAC duct systems. The Air-Tite designation indicates the fitting is designed to reduce air leakage at the branch connection point, which supports duct system efficiency and helps meet building performance requirements. It is commonly installed on rectangular or round trunk ducts where an 8-inch branch run needs to be tapped in cleanly and securely.

Key Features

• 8-inch diameter sizing for standard branch duct connections
• Hot dip galvanized steel construction for corrosion resistance and long service life
• Air-Tite design reduces air leakage at the takeoff connection
• Meets ACCA and SMACNA applicable standards for duct fabrication and performance
• Compatible with standard 8-inch round branch duct runs in forced-air systems

Compatibility

Designed as an OEM-style replacement or new-installation fitting for 8-inch branch connections in residential and light commercial forced-air duct systems built to ACCA and SMACNA standards.

Installation Notes

Installation is typically performed by a licensed HVAC technician or journeyman sheet metal worker. The air handling system should be powered down and airflow stopped before cutting into the trunk duct or securing the takeoff fitting. Sheet metal screws and UL 181-rated duct tape or mastic sealant are commonly used to secure and seal the connection in compliance with local mechanical codes. Do not overtighten fasteners on the galvanized collar, as deformation can compromise the Air-Tite seal.

Technical Specifications

• Diameter: 8 inches
• Material: Hot Dip Galvanized Steel
• Type: Air-Tite Duct Takeoff
• Applicable Standards: ACCA, SMACNA

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: ATT_8IN