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The SOUTHWARK METAL TD_30X8X48 is a hot-dip galvanized steel trunk duct section designed for forced-air HVAC distribution systems. Measuring 30 inches by 8 inches in cross-section and 48 inches in length, this duct section handles supply air delivery in residential and light commercial installations. Construction features button snap-lock seams with S-cleat and drive connections for secure, field-ready assembly. Cross-breaking on the flat panels adds rigidity and reduces metal flexing and noise under airflow pressure. Licensed HVAC technicians and sheet metal contractors install this product as part of new construction or replacement trunk line runs.
This trunk duct section is suited for rectangular supply air trunk lines in forced-air heating and cooling systems. The 30-inch by 8-inch profile accommodates medium to large duct runs where airflow capacity and structural stiffness are required. The hot-dip galvanized finish provides corrosion resistance in attic, crawlspace, and basement installations. S-cleat and drive connection ends allow this section to connect directly to adjacent fittings and duct sections following standard sheet metal assembly practices compliant with ACCA and SMACNA guidelines.
Designed as a standard rectangular sheet metal trunk duct section compatible with S-cleat and drive-style duct connections used in residential and light commercial forced-air HVAC distribution systems.
Installation should be performed by a licensed HVAC technician or qualified sheet metal contractor. Shut down the air handler or furnace and lock out power before modifying or extending an existing duct system. S-cleat and drive connections require standard sheet metal hand tools and should be sealed with UL 181-listed duct sealant or foil tape per local mechanical code requirements. Support hangers and spacing should follow SMACNA duct installation standards for the duct weight and run length.
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