Southwark Metal TD_26X8X48 Sheet Metal Trunk Duct

Product Description

The SOUTHWARK METAL TD_26X8X48 is a rectangular sheet metal trunk duct section manufactured from hot dip galvanized steel. It measures 26 inches by 8 inches in cross-section and 48 inches in length. The duct ships with a button snap-lock seam and connects to adjacent sections using S-cleat and drive connections on each end. Cross breaking is applied to the flat panels to reduce oil-canning and maintain panel rigidity under airflow pressure. This trunk duct is installed by sheet metal mechanics and HVAC technicians in low-pressure forced-air distribution systems.

This duct section is suited for residential and light commercial HVAC trunk-and-branch layouts where a 26-by-8-inch rectangular duct is specified. The 48-inch length fits standard stud-bay and joist-bay runs and works within systems designed to ACCA Manual D airflow sizing guidelines and SMACNA duct construction standards. Installers use it as a main trunk run off an air handler or furnace, transitioning to smaller branch takeoffs along the system.

Key Features

• Hot dip galvanized steel construction resists corrosion in attic, crawlspace, and basement installations
• Button snap-lock seam secures the longitudinal joint without additional fasteners
• S-cleat and drive connection system allows fast field assembly and sealing at duct joints
• Cross-broken flat panels reduce vibration and panel flex under operating static pressure
• Conforms to ACCA and SMACNA applicable standards for low-pressure rectangular duct fabrication
• 48-inch section length reduces the number of joints required on longer trunk runs

Compatibility

Designed as an OEM-style rectangular trunk duct section for use in low-pressure residential and light commercial forced-air HVAC distribution systems built to ACCA and SMACNA standards.

Installation Notes

Sheet metal trunk duct is installed by licensed HVAC technicians or journeyman sheet metal mechanics. Power down the air handler or furnace and verify the system is de-energized before connecting new duct sections. All longitudinal seams and transverse joints should be sealed with UL 181-listed mastic or foil tape per local mechanical code requirements. Support hangers should be spaced per SMACNA guidelines to prevent sag and maintain proper airflow geometry.

Technical Specifications

• Width (Size A): 26 inches
• Height (Size B): 8 inches
• Length: 48 inches
• Material: Hot Dip Galvanized Steel
• Seam Type: Button Snap-Lock
• Connection Type: S-Cleat and Drive
• Panel Treatment: Cross Broken
• Applicable Standards: ACCA, SMACNA

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: TD_26X8X48