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The SOUTHWARK METAL 28R_4X14X6 is a rectangular-to-round sheet metal duct end boot designed for transitioning from a rectangular duct opening to a round collar at a register or grille. The boot features a center outlet configuration, connecting a 4 inch by 14 inch rectangular face to a 6 inch round collar. Fabricated from hot dipped galvanized steel, it resists corrosion in both residential and light commercial HVAC applications. HVAC installers use this fitting to terminate supply or return ductwork at a floor, wall, or ceiling register location. It meets ACCA and SMACNA standards for sheet metal duct fabrication.
This end boot is suited for low-pressure residential forced-air systems where rectangular trunk or branch ductwork must terminate at a standard register or grille. The center outlet design centers the round collar within the rectangular face, which is a common configuration for floor and sidewall register applications. Installers working on new construction or duct replacement projects will find this fitting compatible with standard galvanized ductwork assemblies.
Designed as an OEM-style sheet metal fitting for use with standard galvanized rectangular and round ductwork systems in residential and light commercial forced-air HVAC installations.
Installation should be performed by a licensed HVAC technician or qualified sheet metal installer following SMACNA duct construction standards. Shut down the air handling unit and de-energize the system before connecting or modifying ductwork. Secure the boot to the duct with sheet metal screws and seal all joints with listed duct sealant or foil tape per local mechanical code requirements. Do not exceed the pressure rating of the duct system this fitting is installed in.
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