Material:Iron, carbon steel, galvanized steel coil, SS304, SS316, SS316L Surface Finish: Electric galvanized for indoor use to BS EN 12329-2000, KFI, FM, 12microns thick. Powder coated - for indoor use to JG/T3045-1998, between 6 and 10 microns thick Hot Dipped Galvanized for outdoor use to BS EN 1461-1999, KFI, FM between 60 and 80 microns thick Electrolytic Polishing for stainless steel Specification: 41*21mm, 41*41mm, 41*62mm Thickness:2.0mm, 2.5mm Customized service is available Delivery:10-15 days Packing:Bundle/plastic woven bag Advantages: 1.FM standard items, 2.Timely delivery, 3.Easy installation, 4.Competitive price, 5.Engineer teams service, 6.24 hours after sale service.