... dipped galvanized steel 3.bundle packing and prompt delivery time omega channel for gypsum board system size avaliable :68*35*2268 ... , 75 x 40mm,70 x 35mm, 100 x 40mm3. Furring Chanel: 68x35x22x11mm,etc.4. Length: 2.7mm, 2.8mm, 2.9mm ... , 0.40mm, 0.45mm, 0.5mm, 0.55mm, 0.60mm omega channel for gypsum board system