Southwark Metal ATSD_8IN Duct Takeoff 8 Inch

Product Description

The SOUTHWARK METAL ATSD_8IN is an Air-Tite sheet metal duct takeoff fitting designed for branch connections in forced-air HVAC duct systems. Constructed from hot dip galvanized steel, this fitting delivers corrosion resistance and structural integrity in both residential and light commercial applications. The 8-inch diameter opening is sized for standard round branch duct runs. The integrated scoop directs airflow from the main trunk into the branch, and the built-in damper provides on-site airflow balancing without additional hardware. HVAC sheet metal installers and duct fabricators typically specify this fitting during new construction and retrofit duct work.

This takeoff is suited for trunk-and-branch duct layouts where a controlled, balanced connection point is needed between a main rectangular or round trunk line and an 8-inch round branch duct. The scoop and damper combination makes it practical for systems that require airflow adjustment at the branch level. It meets ACCA and SMACNA standards, which are the primary design and fabrication standards for residential and commercial forced-air distribution systems.

Key Features

• Hot dip galvanized steel construction for corrosion resistance in conditioned and unconditioned spaces
• Integrated scoop directs airflow efficiently from trunk to branch duct
• Built-in damper allows field balancing of branch airflow without separate hardware
• Air-Tite construction minimizes duct leakage at the takeoff connection
• Meets ACCA and SMACNA fabrication and performance standards

Compatibility

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

Installation Notes

Installation should be performed by a licensed HVAC technician or qualified 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 de-energized before cutting into or modifying any existing duct section. Secure the takeoff to the trunk with sheet metal screws and seal all joints with UL 181-rated mastic or foil tape to maintain system airtightness. Adjust the damper to the desired position after system startup and airflow balancing is complete.

Technical Specifications

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

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: ATSD_8IN