Southwark Metal TD_12X12X48 Trunk Duct 12x12x48

Product Description

The SOUTHWARK METAL TD_12X12X48 is a rectangular sheet metal trunk duct section used to distribute conditioned air in forced-air HVAC systems. Fabricated from hot dip galvanized steel, it measures 12 inches wide by 12 inches tall by 48 inches long and features a button snap-lock seam with S-cleat and drive connection for fast, secure assembly. Cross-breaking adds rigidity to the flat panels, reducing drumming and flexing under pressure. Licensed HVAC technicians and sheet metal installers use this trunk duct in residential and light commercial duct systems where durability and code-compliant construction are required.

This trunk duct section is suited for supply air main trunk runs in residential forced-air heating and cooling systems as well as light commercial applications. The 12-inch by 12-inch cross section accommodates typical main trunk sizing in single-family and small multi-zone layouts. The S-cleat and drive connection ends allow straight inline assembly with standard field-fabricated or prefabricated duct sections, minimizing labor time during roughin and installation.

Key Features

• Hot dip galvanized steel construction for corrosion resistance in conditioned and unconditioned spaces
• Button snap-lock seam provides a tight longitudinal joint without additional fasteners
• S-cleat and drive connection ends for inline duct assembly and secure section-to-section joining
• Cross-broken panels reduce noise and improve rigidity under operating static pressure
• Meets ACCA and SMACNA applicable standards for sheet metal ductwork fabrication

Compatibility

Designed as an OEM-style replacement and new-construction trunk duct section compatible with standard rectangular sheet metal duct systems using S-cleat and drive connections per SMACNA guidelines.

Installation Notes

Installation should be performed by a licensed HVAC technician or journeyman sheet metal worker familiar with SMACNA duct construction standards. Power down the air handling unit and close the system before cutting into or extending an existing trunk duct run. Use aviation snips, a drive bar, and appropriate cleating tools to seat S-cleat and drive connections fully before sealing longitudinal seams with UL 181-rated mastic or foil tape where required by local mechanical code. Support the duct at intervals consistent with SMACNA hanger spacing requirements for the duct size and weight.

Technical Specifications

• Material: Hot Dip Galvanized Steel
• Width (Size A): 12 inches
• Height (Size B): 12 inches
• Length: 48 inches
• Connection Type: Button Snap-Lock with S-Cleat and Drive Connection
• Panel Treatment: Cross Broken
• Applicable Standards: ACCA, SMACNA

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: TD_12X12X48