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The SOUTHWARK METAL 51F8107SD is a 601 register boot designed to transition ductwork to a floor, wall, or ceiling register opening. This sheet metal fitting connects round or rectangular duct to a standard register face, directing conditioned air into the occupied space. The 51F8107SD measures 10 inches by 8 inches by 7 inches, making it suitable for residential and light commercial HVAC installations. HVAC technicians and sheet metal contractors install this type of fitting during new construction or system retrofits where a properly sized transition boot is required to maintain airflow and register alignment.
The 51F8107SD is used in forced-air heating and cooling systems where ductwork must terminate at a register grille. The 10 x 8 x 7 inch configuration accommodates standard register openings in that size range. This boot is appropriate for floor, sidewall, or ceiling register applications depending on duct routing and system layout. It is a common fitting in residential forced-air systems and light commercial projects where sheet metal duct distribution is used.
Designed as an OEM-style sheet metal fitting for use in residential and light commercial forced-air HVAC duct systems requiring a 10 x 8 x 7 inch register boot transition.
Installation should be performed by a qualified HVAC technician or licensed sheet metal contractor in accordance with applicable mechanical codes. Shut down the HVAC system and verify the air handler or furnace is de-energized before cutting into or connecting ductwork. Secure the boot to the duct with sheet metal screws and seal all joints with UL-listed duct sealant or foil tape to prevent air leakage. Verify register face alignment and clearances before finalizing the installation.
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