Southwark Metal 20_24X10 Trunk Duct Collar 24x10 in

Product Description

The SOUTHWARK METAL 20_24X10 is a straight starting sheet metal trunk duct collar designed for connecting branch takeoffs to rectangular trunk duct in forced-air HVAC distribution systems. Fabricated from hot dip galvanized steel, this collar measures 24 inches by 10 inches and serves as a starting collar at the trunk duct transition point. HVAC sheet metal technicians and installers use this fitting to establish a clean, rigid takeoff connection that meets SMACNA and ACCA fabrication standards. The galvanized construction provides corrosion resistance suited to both conditioned and mechanical room environments.

This collar is used in residential and light commercial forced-air duct systems where rectangular trunk duct requires a starting or branch connection. Typical installations include air handler supply plenums, main trunk runs, and distribution transitions where a straight-body fitting is required. The 24-inch by 10-inch opening accommodates standard trunk duct sizing common in residential new construction and retrofit ductwork applications. Sheet metal contractors and HVAC installers working to SMACNA duct construction standards will find this fitting consistent with those specifications.

Key Features

• Hot dip galvanized steel construction for corrosion resistance in HVAC duct applications
• Straight body pattern for direct trunk duct starting connections
• 24 inches by 10 inches opening matches standard rectangular trunk duct sizing
• Fabricated to SMACNA and ACCA applicable standards
• Starting collar configuration simplifies trunk-to-branch transitions

Compatibility

Designed as an OEM-style sheet metal fitting for use with standard 24-inch by 10-inch rectangular trunk duct in residential and light commercial forced-air HVAC distribution systems.

Installation Notes

Installation is performed by licensed sheet metal workers or HVAC technicians. Power down the air handling equipment and verify the system is de-energized before working on duct connections. Secure the collar to the trunk duct using drive cleats, S-slips, or sheet metal screws per SMACNA installation guidelines, and seal all joints with UL 181-rated duct mastic or approved metal tape. Follow applicable local mechanical codes and SMACNA duct construction standards for fastening and sealing requirements.

Technical Specifications

• Material: Hot Dip Galvanized Steel
• Size: 24 inches x 10 inches
• Body Pattern: Straight
• Type: Starting
• Applicable Standards: ACCA, SMACNA

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: 20_24X10