Southwark Metal ATSD_16IN 16 Inch Round Duct Takeoff

Product Description

The SOUTHWARK METAL ATSD_16IN is a round sheet metal duct takeoff designed for trunk-to-branch connections in forced-air HVAC distribution systems. Built from hot-dipped galvanized steel, this Air-Tite unit features an integrated scoop and damper, allowing technicians to balance airflow at the takeoff point without adding separate balancing hardware. The 16-inch diameter inlet and 16-inch diameter outlet make it a direct fit for larger residential and light commercial duct runs where high-volume branch supply is required. Licensed HVAC sheet metal mechanics and duct installers are the primary trade for this component.

This takeoff is suited for trunk-line installations in central forced-air systems, including gas furnace, heat pump, and air handler configurations where trunk duct sizes call for a 16-inch round branch connection. The built-in scoop captures moving airflow from the main trunk and directs it into the branch, improving pressure recovery and delivery efficiency compared to a flat-top collar. The integral damper provides on-site airflow adjustment during system commissioning and balancing.

Key Features

• Hot-dipped galvanized steel construction resists corrosion in conditioned and unconditioned space installations
• Air-Tite round design minimizes air leakage at the takeoff joint
• Integrated scoop improves static pressure recovery from the trunk into the branch
• Built-in damper allows airflow balancing without additional hardware
• Meets ACCA and SMACNA applicable standards for duct construction and installation
• 16-inch inlet and outlet diameters suit high-volume branch supply applications

Compatibility

Designed as an OEM-style sheet metal duct takeoff for use in residential and light commercial forced-air duct systems requiring a 16-inch round branch connection on standard rectangular or round trunk ductwork.

Installation Notes

Installation should be performed by a licensed HVAC technician or sheet metal mechanic following SMACNA duct construction standards and local mechanical code requirements. Shut down the air handling system and de-energize the unit before cutting into existing trunk duct. Seal all joints with listed duct sealant or UL 181-rated tape per applicable code. Adjust the damper during system commissioning to achieve design airflow as specified by the ACCA Manual D duct design.