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The SOUTHWARK METAL 59F8108SD is a 10 x 8 x 8 inch register boot with flange, designed to transition ductwork to a floor, wall, or ceiling register opening. The flange provides a finished edge that seats flush against the register face, holding the boot securely in place and reducing air bypass at the register opening. This type of fitting is a standard component in residential and light commercial forced-air HVAC systems and is typically installed by licensed HVAC technicians or sheet metal workers during new construction or duct retrofit projects.
The 59F8108SD is suited for supply-side duct systems where a round or rectangular duct run terminates at a register or grille. The 10 x 8 x 8 inch dimensions indicate a 10-inch inlet transitioning to an 8 x 8 inch outlet, making it appropriate for branch runs feeding standard register openings. It is commonly used in floor-mounted or sidewall register installations in residential HVAC applications.
Designed as an OEM-style sheet metal register boot for use in residential and light commercial forced-air HVAC duct systems requiring a 10 x 8 x 8 inch boot with integral flange.
Installation is typically performed by a licensed HVAC technician or sheet metal worker. The system blower should be shut off and the thermostat set to the off position before beginning duct work. The boot should be secured to the duct branch and the surrounding framing per local mechanical code requirements, and all joints should be sealed with mastic or listed duct tape in accordance with applicable codes. Do not operate the air system until all duct connections are properly secured and sealed.
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