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The SOUTHWARK METAL 1060-26GA_16IN is a free-flow galvanized steel pipe tee designed for use in sheet metal ductwork systems. Fabricated from hot-dip galvanized steel at 26 gauge, it provides a durable three-way branch connection measuring 16 inches on all three openings. The free-flow design minimizes airflow restriction at the branch point, supporting balanced air distribution across the duct run. This fitting meets ACCA and SMACNA standards, making it appropriate for commercial and residential forced-air systems where code-compliant ductwork is required. Sheet metal contractors and HVAC installers are the primary trades that work with this component.
This tee fitting is used in supply or return air duct systems where a single trunk line must be split into two branches of equal diameter. The equal 16-inch dimensions on all three legs make it suited for larger trunk-to-branch transitions in commercial light construction, multi-zone residential systems, or industrial ventilation layouts. Its hot-dip galvanized finish provides corrosion resistance appropriate for attic, crawlspace, and mechanical room installations where moisture exposure is a concern.
Designed as an OEM-style replacement or new-installation fitting for 16-inch round galvanized steel ductwork systems fabricated and installed to SMACNA and ACCA standards.
Installation should be performed by a licensed sheet metal contractor or HVAC technician familiar with SMACNA duct construction standards. Shut down the air handling unit and lock out power before modifying any duct section. Connections should be sealed with UL-listed mastic or foil tape and mechanically fastened per SMACNA guidelines. Avoid over-crimping the collar edges, as this can distort the fitting geometry and reduce the free-flow performance of the branch junction.
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