Add a sturdy sliding shelf for easy peripheral and equipment access in your server rack or cabinet Compatible with StarTech.com 4POSTRACKBK 1U Sliding Server Rack Shelf / Adjustable Rack Mount Shelf 55lbs (25kg) Weight capacity 22in (559mm) Deep sliding shelf Mounting depth adjusts from 20-24in (508-609mm) Universal rack shelf fits standard 19in wide racks High-capacity shelf for storing networking devices KVM switches tools and equipment in your server room or office