4724 spiral air duct products are offered for sale by suppliers on Alibaba.com, of which duct making machines accounts for 31%, hvac systems parts accounts for 15%, and registers & grilles accounts for 1%.
A wide variety of spiral air duct options are available to you, such as hotel, building and industrial.You can also choose from aluminum, plastic and abs spiral air duct,As well as from total solution for projects, cross categories consolidation spiral air duct, and whether spiral air duct is white, black, or silver.