Material is cold roll steel and powder coating finished These units are quick and easy to assemble and require no special tools. Popular tears drop design connects in seconds Beams lock securly into uprights and feature a positive safety clip. Choose from either wire mesh decking or heavy duty particle board decking. Shelves are fully adjustable. Its maximum capacity weight of each layer is 500-800kgs. L: 1000-2000 W: 500-1000 H: 1000-5000.