cold bended u track and hot rolled u track, channel, garage door track Detailed Product Description:Various sizes of cold bended u track and hot rolled u track, channel, garage door track Product Features:(1)Lightweight: 3-60 kg/m2, .(2)Easy and stable installation: unique joint design, (3)Galvanized steel: Rust- proof and Corrosion- resistant. U track, channel, garage door track