Southwark Metal ATSD_12IN Duct Takeoff 12 Inch

Product Description

The SOUTHWARK METAL ATSD_12IN is a 12-inch diameter Air-Tite sheet metal duct takeoff designed for forced-air distribution systems. Fabricated from hot-dip galvanized steel, it delivers durable, corrosion-resistant performance in both new construction and retrofit applications. The unit ships with an integrated scoop and damper, allowing airflow to be directed and balanced at the branch takeoff point without additional field fabrication. Licensed HVAC technicians and sheet metal contractors are the primary installers for this type of fitting.

This takeoff is suited for residential and light commercial forced-air duct systems where a round branch connection must be made from a main trunk duct. The scoop aids in capturing airflow from the trunk and directing it into the branch run, while the damper provides on-site balancing capability. It is designed to meet Air-Tite construction standards, supporting low-leakage duct assembly requirements common in energy-code-compliant installations.

Key Features

• 12-inch diameter opening sized for standard round branch duct connections
• Hot-dip galvanized steel construction for corrosion resistance in conditioned and unconditioned spaces
• Integrated scoop promotes efficient airflow capture from the main trunk
• Built-in damper allows field adjustment for system balancing
• Air-Tite construction type supports low-leakage duct assemblies
• Meets ACCA and SMACNA applicable standards

Compatibility

Designed as an OEM-style replacement or new-installation fitting for residential and light commercial forced-air duct systems requiring a 12-inch round branch takeoff connection from a rectangular or round main trunk.

Installation Notes

Installation should be performed by a licensed HVAC technician or qualified sheet metal contractor in accordance with SMACNA duct construction standards and applicable local mechanical codes. Power down the air handling unit and verify system is de-energized before cutting into an existing trunk duct. Seal all mating edges with approved duct sealant or mastic and secure with sheet metal screws to maintain Air-Tite performance. Adjust the damper after system startup during the air balancing procedure.

Technical Specifications

• Diameter: 12 inches
• Material: Hot Dip Galvanized Steel
• Type: Air-Tite
• Inclusions: Scoop and Damper
• Applicable Standards: ACCA, SMACNA

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: ATSD_12IN