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The SOUTHWARK METAL 422-06 is a straight tee duct fitting designed for sheet metal HVAC ductwork systems. It connects three duct runs at a single junction point, allowing airflow to be split or merged within a forced-air distribution system. This fitting measures 6 inches on all three openings, making it a symmetrical tee suited for balanced trunk-and-branch layouts. HVAC technicians and sheet metal contractors install this type of fitting during new construction, system retrofits, or duct modifications where a three-way air distribution point is required.
This tee fitting is used in residential and light commercial forced-air HVAC systems where 6-inch round or rectangular duct runs meet at a common junction. Typical applications include supply air distribution off a main trunk line and branch takeoff configurations in attic, crawlspace, or basement duct systems. It is sold as an individual unit and is intended for professional installation by qualified HVAC contractors or sheet metal workers.
Designed as an OEM-style sheet metal tee fitting for use with standard 6-inch HVAC ductwork in residential and light commercial forced-air systems.
Installation should be performed by a licensed HVAC technician or qualified sheet metal contractor in accordance with local mechanical codes and SMACNA duct construction standards. Power down the air handling unit and verify the system is de-energized before working inside the duct system. Secure all connections with appropriate sheet metal screws and seal joints with listed duct sealant or metallic tape to maintain system airtightness. Do not use this fitting in applications requiring flexible duct connectors without proper transition adapters.
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