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The SOUTHWARK METAL ATT_6IN is a 6-inch diameter Air-Tite sheet metal duct takeoff fabricated from hot dip galvanized steel. Duct takeoffs branch supply or return airflow from a main trunk line to individual branch runs, and this fitting is built to meet ACCA and SMACNA standards for residential and light commercial HVAC ductwork systems. The galvanized steel construction resists corrosion in both conditioned and unconditioned spaces. Licensed HVAC technicians and sheet metal contractors install this fitting during new construction or duct replacement work where a tight, low-leakage branch connection is required.
The ATT_6IN is suited for forced-air heating and cooling systems where a 6-inch branch duct branches off a rectangular or round trunk. The Air-Tite design reduces air leakage at the connection point, which supports system efficiency and helps meet duct leakage requirements in energy codes. It is a common fitting in residential and small commercial installations where branch-run airflow must be distributed cleanly from the main trunk without excessive pressure loss.
Designed as an OEM-style replacement or new-installation fitting for 6-inch branch connections in residential and light commercial forced-air duct systems built to ACCA and SMACNA specifications.
Installation should be performed by a licensed HVAC technician or qualified sheet metal contractor. Power down the air handler or furnace and ensure the system is not pressurized before cutting into an existing trunk line. Secure the takeoff using sheet metal screws and seal all joints with listed duct mastic or UL 181-rated tape in accordance with local mechanical codes and SMACNA guidelines. Do not exceed the fitting's rated duct diameter when connecting branch runs.
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