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The SOUTHWARK METAL 59F_4X10X6 is a hot dip galvanized steel sheet metal boot elbow designed for residential and light commercial HVAC duct systems. This ceiling-mount, 90-degree elbow transitions from a 4 x 10 inch rectangular duct opening to a 6-inch round collar, making it a standard component for connecting branch runs to floor or ceiling registers. The integrated flange simplifies attachment to the register face and helps seat the boot securely in drywall or subfloor openings. Fabricated to ACCA and SMACNA standards, it delivers consistent geometry and material quality expected in duct fabrication work.
This boot elbow is used in forced-air heating and cooling systems where a rectangular supply trunk or branch duct must terminate at a round-neck ceiling register. It is a common fit for new construction and retrofit ducting in residential applications, installed by HVAC technicians and sheet metal contractors. The 90-degree turn directs airflow from a horizontal or vertical duct run into the register opening cleanly and efficiently.
Designed as an OEM-style sheet metal boot elbow for forced-air HVAC duct systems requiring a 4 x 10 inch rectangular inlet and a 6-inch round collar outlet at a ceiling register location.
This boot elbow is installed by licensed HVAC technicians or sheet metal contractors as part of duct system rough-in or replacement. Power down the air handling unit and close the system disconnect before working in the duct system. Secure the boot to the branch duct using sheet metal screws and seal all joints with UL 181-rated mastic or foil tape per SMACNA guidelines. Confirm the flange seats flush against the ceiling surface before installing the register grille.
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