Raising Electronics Rack Mount Fixed Shelf - Solid, Versatile and Premium Quality, organize and secure your Rack Mount Equipment. This premium quality 1U adjustable rack mount shelf is designed to fit different installation depth of racks and cabinets. It is easy to mount on a 19" standard rack or cabinet. The shelf is made of cold rolled steel to provide you with a maximum load of 175LB. With the heavy duty materiel, it provides you with exceptional stability. The adjustable feature provides you with flexibility to accommodate various installations from 21.5"-28". Mounting screw kit is included.