Southwark Metal TD_30X12X48 Trunk Duct 30x12x48

Product Description

The SOUTHWARK METAL TD_30X12X48 is a hot-dip galvanized steel sheet metal trunk duct measuring 30 inches by 12 inches by 48 inches. It is designed for use in forced-air HVAC distribution systems as a main trunk line carrying conditioned air from the air handler or furnace to branch takeoffs. The duct ships with button snaplock seams, S-cleat and drive connection ends, and cross-broken panels for added stiffness across the face. Licensed HVAC technicians and sheet metal installers work with this fitting during new construction, system replacement, or duct renovation projects.

This trunk duct is suited for residential and light-commercial forced-air systems where a 30-inch by 12-inch rectangular main trunk is specified. It fits inline with standard rectangular duct runs and connects to fittings, transitions, and branch collars using the factory-furnished S-cleat and drive connections. The 48-inch section length reduces the number of joints required in a straight run, which helps minimize leakage points and labor time. Applications include attic, basement, and crawlspace duct installations where rigid galvanized steel is required by design or code.

Key Features

• Hot-dip galvanized steel construction for corrosion resistance in humid or unconditioned spaces
• Button snaplock seam for fast, secure longitudinal closure without additional fasteners
• S-cleat and drive connection ends for standard inline duct assembly
• Cross-broken panels increase rigidity and reduce flex noise under airflow pressure
• 48-inch section length minimizes joint count in straight trunk runs
• Meets ACCA and SMACNA applicable standards

Compatibility

Designed as a standard rectangular trunk duct section compatible with residential and light-commercial forced-air duct systems using S-cleat and drive connections on 30-inch by 12-inch rectangular duct configurations.

Installation Notes

Installation should be performed by a licensed HVAC technician or qualified sheet metal installer in accordance with SMACNA duct construction standards and local mechanical codes. Shut down the air handler or furnace and confirm the system is de-energized before cutting into or extending an existing duct run. Secure all S-cleat and drive connections fully and seal joints with listed duct mastic or UL 181-rated tape per code requirements. Support the duct at intervals specified by SMACNA guidelines to prevent sagging and maintain system integrity.

Technical Specifications

• Material: Hot-Dipped Galvanized Steel
• Section Length: 48 inches
• Width: 30 inches
• Height: 12 inches
• Connection Type: S-Cleat and Drive
• Seam Type: Button Snaplock
• Applicable Standards: ACCA, SMACNA

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: TD_30X12X48