2499 300mm ducting products are offered for sale by suppliers on Alibaba.com, of which hvac systems parts accounts for 17%, duct making machines accounts for 2%, and wiring ducts accounts for 1%.
A wide variety of 300mm ducting options are available to you, such as hotel, office and building.You can also choose from aluminum, aluminum alloy and plastic 300mm ducting,as well as from graphic design, total solution for projects, and 3d model design 300mm ducting,and whether 300mm ducting is free spare parts, or onsite installation.