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 :KeywordsRectangular GI galvanized iron ductGI duct manufacturerHVAC ductwork for commercialGI (Galvanized Iron) ductworkindustrial HVAC duct systems