Universal Fit for 19 Inch Racks:1U Server Rack Shelf: 19" Wide, 1U Space, Fitting any 19-inch server rack or network cabinet,providing solution for lightweight IT, data, networking, and non-rack-mount equipment. Adjustable Depth: This cantilever rack shelf's deep is adjustable from 16" to 20" for holding various sizes of your IT, data, networking, or other non-rack mount equipments. Sturdy Constructure: The 2 holding brackets are constructed with double layers of cold rolled steel and make this metal rack shelf strong and durable. Max. loading weight capacity: 22 pounds (10 kgs). Ventilated Design: Features a vented surface, this 1U universal rack tray vented shelf allows optimal air circulation to keep your mounted equipment cool and prevent overheating. Easy Assembly: Only need to put the trays and holding brackets together with the included screws. It comes with all hardware included and takes just minutes to put together.