GLOBALRACK 9U Open Frame Server Rack, Durable & Space-Saving Solution,Choose from multiple height configurations (see comparison grid) to optimize your IT space. Built with industrial-grade cold-rolled steel to provide you with a maximum load of 55LB,The thickness of the column steel plate reaches 1.5MM (0.06 inch).9U server rack 19"H x 21"W 18"D,a great feature that will fit most of the server installation on the market.clear U-markings for precise component alignmen, Available in variety heights, Screws and cage nuts are included.