Material: spcc cold rolled steel Conform to ANSI/EIAR-310-D DIN41491 ; PART1 , IEC297-2 , DIN41494 ; DART7 GB/T3047-92 standard, compatible 19 inch international standard, metric system standard and ETSL standard User can add the cable fixtures accordingly . Hig density mesh front door and back mesh door which ensure heat radiation and good ventilation Top is amounted with fan rack Powder coated to protect against rust, oxidization, scratches, lacquer peeling, strong acid and alkali erosion . Framework using high strength steel which bears heavy weight Rack's side panel can be easily assembled and disassembled from the outside without using any tools . Screw-less appearance for a smooth and clean look.