Product Size: H 1.75" x W 2.83" x D 16"-33", Fits any rack and cabinet including 19", 23", 30". ^^ Depth Adjustable from 16 Inch to 33 Inch, you can accommodate various rack sizes. ^^ Made of high quality cold rolled steel with powder coating, Support up to 110 lbs when 4 post rack or cabinet at 16 Inch Deep. ^^ Including 1 Pair of 1U Server Shelf Rails, 8 sets of M6 screws and cage nuts. ^^ Designed to support most servers in a rack or cabinet.