Powerful load-bearing Constructed from durable Cold Rolled Steel, Rack Shelf Back Support enhances stability, wall-mounted capacity of 130lbs, the ground-mounted up to 260lbs Considerate DesignsOpen-frame layout, including a top panel adding space, Anti-Slip Shelf Stops fixing devices and compatible racks for stack and expansion to meet requirements of home server rack Complete Accessories A 20U open frame server rack, two ventilated shelves, four shelf stops, four velcro straps and a set of equipment mouting screws Versatile Application Ideal for space-efficient multi-device setups in warehouses, retail, classrooms, offices and more; Excellent choices as AV Rack/IT Rack Effortless Setup Network Rack includes hardware, a comprehensive manual, mounting hole drilling template and an online assembly video to simplify setup