Southwark Metal 58F4105 Flanged Sheet Metal End Boot

Product Description

The SOUTHWARK METAL 58F4105 is a flanged sheet metal end boot designed to transition from rectangular duct to a round collar at a 90-degree angle, directing conditioned air through a ceiling register or diffuser. Fabricated from hot dip galvanized steel, this end boot offers corrosion resistance suited to both residential and light commercial HVAC duct systems. The rectangular opening measures 4 inches by 10 inches, with a 6-inch diameter round collar outlet. The integrated flange simplifies register attachment and provides a clean, secure fit at the ceiling plane.

This end boot is used in forced-air heating and cooling systems where a branch duct run terminates at a ceiling supply outlet. It is a standard component in trunk-and-branch and radial duct layouts. HVAC sheet metal installers and mechanical contractors fit this boot during rough-in to connect rectangular branch duct to a 6-inch round collar feeding a ceiling register or grille. Sizing conforms to ACCA and SMACNA standards, making it suitable for systems designed to those guidelines.

Key Features

• Hot dip galvanized steel construction resists corrosion in typical HVAC duct environments
• Integrated flange secures ceiling register or diffuser without additional framing hardware
• 90-degree elbow geometry transitions rectangular branch duct to a ceiling-plane outlet
• Rectangular opening: 4 inches x 10 inches; round collar outlet: 6 inches diameter
• Fabricated to ACCA and SMACNA applicable standards

Compatibility

Designed as an OEM-style replacement or new-installation component for forced-air residential and light commercial duct systems using 4-inch x 10-inch rectangular branch duct terminating at a 6-inch round ceiling outlet, built to ACCA and SMACNA standards.

Installation Notes

Installation is performed by licensed sheet metal workers or HVAC mechanical contractors. Disconnect power to the air handler or furnace before working on the duct system. Secure the boot to the branch duct using sheet metal screws and seal all joints with UL 181-rated mastic or foil tape per SMACNA installation guidelines. Confirm the flange sits flush against the ceiling surface before fastening the register or grille.

Technical Specifications

• Material: Hot Dip Galvanized Steel
• Rectangular Opening (Size A): 4 inches x 10 inches
• Round Collar Outlet (Size B): 6 inches diameter
• Type: Ceiling, 90 Degree Elbow
• Inclusions: Flange
• Applicable Standards: ACCA, SMACNA

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: 58F4105