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The SOUTHWARK METAL 59F8149SD is a 203RF-style rectangular register boot with flange, sized 14 x 8 x 9 inches. It connects rectangular ductwork to a floor, wall, or ceiling register opening, transitioning airflow from the duct system to the conditioned space. This fitting is a standard component in residential and light commercial forced-air HVAC systems and is typically installed by sheet metal workers or HVAC technicians during new construction or duct retrofit work. The integrated flange provides a secure register-face mounting surface and a clean finished appearance at the grille opening.
This register boot is suited for use in forced-air supply duct systems where a rectangular duct run terminates at a register. The 14 x 8 x 9 inch configuration covers a range of common duct-to-register transitions found in residential construction. The flanged design simplifies register or grille attachment and helps seat the face plate flush against the finished floor, wall, or ceiling surface. HVAC installers and sheet metal contractors use this boot in both new construction rough-in and replacement duct applications.
Designed as an OEM-style sheet metal fitting for use with standard rectangular supply duct systems in residential and light commercial forced-air HVAC installations.
Installation should be performed by a qualified HVAC technician or licensed sheet metal contractor. Shut down the air handling system before cutting into or modifying ductwork. Secure the boot to the duct with sheet metal screws and seal all joints with UL-listed foil tape or mastic sealant per local mechanical code requirements. Ensure the flange seats flush against the finished surface before attaching the register or grille.
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