Rectangular GI (Galvanized Iron) Duct is a type of ductwork commonly used in HVAC (Heating, Ventilation, and Air Conditioning) systems, particularly in commercial and industrial applications.Aug 7th, 2026 11:12 AMShare this on :KeywordsHVAC ductwork for commercialGI duct manufacturerGI (Galvanized Iron) ductworkRectangular GI galvanized iron ductindustrial HVAC duct systems