1249 heavy duty air duct products are offered for sale by suppliers on Alibaba.com, of which hvac systems parts accounts for 7%, air conditioners accounts for 2%, and registers & grilles accounts for 1%.
A wide variety of heavy duty air duct options are available to you, such as hotel, industrial and outdoor.You can also choose from aluminum alloy, plastic and abs heavy duty air duct,as well as from white, black, and silver heavy duty air duct,and whether heavy duty air duct is easy assemble, or flexible.