Add a sturdy 22in depth fixed shelf into almost any server rack or cabinet Compatible with StarTech.com 4POSTRACKBK 2U Server Rack Shelf Fixed Rack Mount Shelf 50bs (22.7kg) Weight capacity 22in (559mm) Deep fixed shelf Universal rack shelf fits all standard 19in wide server racks or cabinets Cantilever shelf for storing networking devices KVM switches tools and other equipment in your server room or office