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The SOUTHWARK METAL 96-28GA_4IN is a hot-dip galvanized steel draw band designed for securing sheet metal ductwork connections in forced-air HVAC systems. Manufactured to 28-gauge material thickness, this draw band provides a tight, reliable mechanical connection at duct joints and slip fittings. The hot-dip galvanization process delivers corrosion resistance suited for both conditioned and unconditioned spaces. Licensed HVAC technicians and sheet metal installers use this type of hardware during new construction and retrofit duct system work to meet SMACNA and ACCA standards for duct sealing and mechanical fastening.
This draw band is sized for 4-inch diameter round ductwork, making it a standard fit for small-diameter branch runs in residential and light commercial forced-air distribution systems. It is commonly installed at collar connections, takeoffs, and flex duct transitions where a secure mechanical band is required prior to sealing with mastic or approved tape per SMACNA installation guidelines.
Designed as an OEM-style mechanical fastener for 4-inch diameter round sheet metal ductwork in residential and light commercial forced-air HVAC systems built to SMACNA and ACCA standards.
Installation is performed by licensed sheet metal workers or HVAC technicians following SMACNA duct construction standards. The air handling system should be de-energized and the blower confirmed off before working on duct connections. Draw bands are typically installed before final mastic or UL 181-listed tape sealing at the joint. Follow applicable local mechanical codes for duct fastening requirements in your jurisdiction.
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