Galvanized Iron (G.I.) Ductwork system uses galvanized iron that varies in thickness from 0.56mm to 1.5mm and are fabricated as per international standard like DW144 and SMACNA. The life of GI Duct is longer & durable. G.I. Duct is suitable for small, medium, and large project in residential, industrial and commercial buildings. It is widely used on prestigious project such as Hotels, residential/commercial towers, Hospitals and Malls.