ASTM-A653 CS Type B Galvanized Steel, G-30 Coating LFQ Chemical Treatment
One piece die stamped body w/ Riveted corners using 1/8 x 1/8 rivets. Collar is undersized with a bead to accept pipe or flex duct.
354F: 1/2″ Flange available upon request Custom sizes and extended body lengths are available upon request. Available with No Collar