Southwark Metal TD_25X12X48 Trunk Duct 25x12x48

Product Description

The SOUTHWARK METAL TD_25X12X48 is a hot-dip galvanized steel sheet metal trunk duct section measuring 25 inches by 12 inches by 48 inches. It is designed for use in forced-air HVAC distribution systems where main supply or return trunk lines connect the air handler or furnace to branch ducts. The section ships in button snaplock assembly with S-cleat and drive connections already formed, reducing field fabrication time. Cross-breaking on the flat panels adds stiffness, reducing flex noise and panel deflection under system static pressure. Licensed HVAC contractors and sheet metal installers are the typical trades handling this duct.

This trunk duct section is suited for residential and light commercial forced-air systems. It fits into new-construction trunk-and-branch layouts and retrofit applications where damaged or undersized main duct sections need replacement. The 25-by-12-inch cross section accommodates higher-volume supply runs off the plenum or main trunk. Fabrication follows SMACNA and ACCA standards, making it appropriate for installations that must meet SMACNA duct construction specifications or ACCA Manual D design requirements.

Key Features

• Hot-dip galvanized steel construction resists corrosion in unconditioned spaces such as attics, crawlspaces, and mechanical rooms
• Button snaplock seam with S-cleat and drive connection allows fast field assembly without additional fabrication equipment
• Cross-broken panels increase rigidity and reduce drumming or oil-canning under system pressure
• 48-inch section length minimizes the number of joints in a straight trunk run
• Meets SMACNA and ACCA applicable standards for commercial and residential duct construction

Compatibility

Designed as an OEM-style sheet metal trunk duct section for residential and light commercial forced-air HVAC systems requiring a 25-inch by 12-inch rectangular duct cross section.

Installation Notes

Installation should be performed by a licensed HVAC technician or journeyman sheet metal worker in accordance with SMACNA duct construction standards and local mechanical codes. Power down the air handler or furnace and verify the system is de-energized before working in the duct system. S-cleat and drive connections must be fully seated and secured before sealing longitudinal and transverse joints with approved duct sealant or mastic per local code requirements. Support hangers should be spaced per SMACNA guidelines for rectangular duct of this cross section.

Technical Specifications

• Material: Hot-Dipped Galvanized Steel
• Section Width: 25 inches
• Section Height: 12 inches
• Length: 48 inches
• Connection Type: Button Snaplock with S-Cleat and Drive
• Panel Reinforcement: Cross-Broken
• Applicable Standards: ACCA, SMACNA

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: TD_25X12X48