Heavy Duty Equipment Shelf, Height: 7.16 IN, Depth: 20 IN, Material: Aluminum, Color: Black, Compatibility: 19 IN Rack, 3 IN Channel, Rack Units: 5, Standard: C/US UL Listed, UL File Number E140851, Application: For Holding Equipment Up To 17-3/4 IN Width X 19.8 IN Depth