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The SOUTHWARK METAL 44-1_12IN is a 1-Quad sheet metal duct damper sized for 12-inch round or rectangular duct systems. Built with a hot dip galvanized steel blade, this damper is designed to regulate airflow within forced-air HVAC distribution systems. It meets ACCA and SMACNA standards, making it a reliable fit for commercial and residential mechanical installations. HVAC technicians and sheet metal contractors install this damper during new construction or retrofit projects where balanced airflow and zone control are required.
This damper is suited for use in low-pressure supply and return duct systems where manual airflow balancing is needed. The 1-Quad blade configuration provides straightforward operation for field technicians adjusting duct runs during system commissioning. It is commonly installed in trunk-and-branch duct layouts and plenum-fed systems found in light commercial and residential construction.
Designed as an OEM-style replacement or new-installation damper for 12-inch sheet metal duct systems meeting ACCA and SMACNA standards in residential and light commercial HVAC applications.
Installation should be performed by a licensed HVAC technician or sheet metal contractor in accordance with SMACNA duct construction standards. Shut down the air handling unit and de-energize the system before beginning duct work. Secure the damper using appropriate sheet metal screws or drive cleats consistent with the duct gauge and joint type. Verify blade operation and airflow direction after installation prior to system startup.
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