ASTM A653 – Commercial Steel – Type B

G30 - G60 - G90 Coating weights available

20 - 26 Gauge – 36, 48, 60 wide products


Standard Hot Dipped galvanized sheets that have been roll formed to add a bead down the length of the sheet.

The bead adds column strength to the finished duct, and acts as a noise dampener by limiting the oil canning effect that can take place in the normal operation of a standard HVAC ductwork.


  • HVAC Ductwork