... , and easy to assemble and unassembled , transporting and assembling 2. Optional accessories can be choosed to purchase according to requirement ... , such as wire slot, wire rack, cantalever plate, drawing and pulling work platform,etc.3 ... covers4. Standard:Accord with ANSI/ EIARS-310- D , IEC297-2 ,DIN41491 , PART1 , DIN41494; PART7 ,GB/ T3047.2-92 YF-DK-2 Open Rack