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The SOUTHWARK METAL SP10-24GA_16IN is a 16-inch diameter, 10-foot length spiral seam sheet metal pipe fabricated from hot dip galvanized steel at 24 gauge material thickness. Spiral pipe of this type forms the backbone of low- and medium-pressure supply and return duct systems in commercial and residential HVAC applications. The helical seam construction provides consistent roundness and structural rigidity along the full 10-foot length. Licensed HVAC technicians and sheet metal contractors are the primary installers. This product meets ACCA and SMACNA standards, making it suitable for engineered duct systems where compliance documentation is required.
This spiral pipe is used in forced-air HVAC duct distribution systems, typically installed in mechanical rooms, ceiling plenums, crawlspaces, and exposed commercial interiors. The 16-inch diameter serves medium-to-large trunk and branch runs where higher airflow volumes are required. At 10 feet per section, it reduces the number of joints needed in longer straight runs, limiting potential leakage points. It is appropriate for both new construction and retrofit duct work where galvanized spiral pipe is specified by the mechanical engineer or required by local code.
Designed as an OEM-style spiral duct section compatible with standard 16-inch round duct fittings, collars, and connectors used in commercial and residential forced-air HVAC distribution systems built to ACCA and SMACNA specifications.
Installation should be performed by a licensed sheet metal contractor or HVAC technician in accordance with SMACNA Duct Construction Standards and applicable local mechanical codes. Shut down and lock out the air handling unit before connecting or sealing duct sections. Joints should be secured with sheet metal screws and sealed with UL 181-listed mastic or foil tape as required by the project specification. Support spacing and hanger methods should follow SMACNA guidelines for round spiral duct of this diameter and gauge.
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