Add a high capacity adjustable mount depth fixed shelf into almost any server rack or cabinet Compatible with StarTech.com 4POSTRACKBK 1U Server Rack Shelf Adjustable Rack Mount Shelf 175lbs (80kg) Weight capacity 27.6in (700mm) deep shelf Mounting depth adjustable from 19.538.3in (495974mm) Universal rack shelf fits all standard 19in wide server racks or cabinets Heavyduty shelf for storing networking devices KVM switches tools and equipment in your server room or office