Southwark Metal TD_20X8X48 Sheet Metal Trunk Duct 20x8x48

Product Description

The SOUTHWARK METAL TD_20X8X48 is a hot dip galvanized steel sheet metal trunk duct section measuring 20 inches by 8 inches by 48 inches. It is designed for use in forced-air HVAC distribution systems as a main supply or return trunk line segment. The section features a button snap-lock seam with S-cleat and drive connection ends, allowing fast, secure field assembly without special tooling. Cross breaking adds panel rigidity and reduces drumming under static pressure. Licensed HVAC technicians and sheet metal mechanics are the primary installers of this product.

This trunk duct section is suited for residential and light commercial forced-air systems where a rectangular main duct run is required. It connects to adjacent duct sections using standard S-cleat and drive slip fittings, which are common in low-pressure supply and return trunk configurations. The 20 by 8 inch cross-section accommodates high-volume airflow in main trunk applications before branching to smaller runouts. It conforms to ACCA and SMACNA standards for sheet metal duct fabrication and installation.

Key Features

• Hot dip galvanized steel construction resists corrosion in typical residential and commercial HVAC environments
• Button snap-lock longitudinal seam provides a tight, consistent closure along the 48-inch length
• S-cleat and drive connection ends allow standard field assembly with adjacent duct sections and fittings
• Cross broken panels increase rigidity and reduce vibration and drumming under airflow pressure
• Fabricated to ACCA and SMACNA standards for duct construction and installation compliance

Compatibility

Designed as an OEM-style replacement and standard fabricated component for rectangular sheet metal trunk duct systems using S-cleat and drive slip connections in low-pressure forced-air HVAC installations.

Installation Notes

Installation should be performed by a licensed HVAC technician or qualified sheet metal mechanic in accordance with SMACNA duct construction standards and local mechanical codes. Power down the air handling unit and verify the system is de-energized before working in the duct system. S-cleat and drive connections should be fully seated and secured before sealing joints with approved duct sealant or tape per local code requirements. Support hangers should be installed at intervals consistent with SMACNA hanger and support specifications for the duct size and weight.

Technical Specifications

• Material: Hot Dip Galvanized Steel
• Width (Size A): 20 inches
• Height (Size B): 8 inches
• Length: 48 inches
• Seam Type: Button Snap-Lock
• End Connection: S-Cleat and Drive
• Panel Reinforcement: Cross Broken
• Applicable Standards: ACCA, SMACNA

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: TD_20X8X48