The Super HETO is pressed from a single piece of G-90 galvanized steel, giving it perfectly smooth radius corners.  The solid body construction reduces leakage meeting SMACNA / ASHRAE Leakage Class 3 standards.  The Super HETO comes with or without volume dampers. The adjustable dampers are assembled using a spring loaded retractable bearing and positive locking hardware.

Sheet Metal Connectors, 5850 Main St., NE Minneapolis, MN 55432; (763) 572-0000;