373 gi air duct products are offered for sale by suppliers on Alibaba.com, of which hvac systems parts accounts for 33%, registers & grilles accounts for 5%.
A wide variety of gi air duct options are available to you, such as hotel, building.You can also choose from graphic design, gi air duct,as well as from traditional gi air duct and whether gi air duct is steel, galvanized steel, or stainless steel.