Material
ASTM-A653 CS Type B Galvanized Steel, G-30 Coating LFQ Chemical Treatment

Gasket
Fire Retardant Polyethylene Foam with Double Stick 3M Tape UL94 HF-1

Assembly
Air Tites are assembled with 1/8″ x 1/8″ Zinc Coated Steel Rivets.

Options
Aluminum: 4-14″-Fabricated from 3003-H14 in 26GA