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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.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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