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The SOUTHWARK METAL 1145R228 is a flat Broadway rectangular trunk duct angle designed for sheet metal ductwork fabrication and assembly. Manufactured from hot dip galvanized steel, this 45-degree angle fitting measures 22 inches by 8 inches and is built to ACCA and SMACNA standards. It is used to create angled transitions and connections in rectangular trunk duct systems. Licensed HVAC sheet metal technicians and ductwork fabricators install this fitting during new construction and system retrofit work.
This trunk duct angle is suited for residential and light commercial HVAC duct systems where rectangular trunk runs require a 45-degree directional change or branch connection. The flat Broadway profile is a standard configuration in low-profile duct layouts. Its 22 x 8 inch dimensions fit common trunk duct sizing found in forced-air heating and cooling systems. Installers working to ACCA Manual D duct design guidelines and SMACNA fabrication standards will recognize this as a code-appropriate fitting.
Designed as an OEM-style sheet metal fitting for rectangular trunk duct systems requiring a 45-degree flat Broadway angle at 22 x 8 inch duct sizing.
This fitting is installed by licensed HVAC technicians or qualified sheet metal workers during duct fabrication or system modification. Power down the air handling equipment and verify airflow has stopped before working on connected ductwork. Secure the angle to adjoining duct sections using drive cleats, S-cleats, or screws per SMACNA duct construction standards. Seal all joints with UL 181-rated mastic or approved metal duct tape to meet building code and ACCA Manual D air-sealing requirements.
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