CPU holder allows you to mount your CPU vertically or horizontally to underside of workstation so you save valuable desktop space. Design keeps CPU at comfortable height to provide easy access to your disk drive. CPU holder pulls out on Teflon glides and offers 360-degree swivel for easy accessibility to connections. With the horizontal setup, the width adjusts 15" to 20-13/16", and the height adjusts 5" to 7-13/16". With the vertical setup, the width adjusts 5-1/4" to 9-13/16", and the height adjusts 12-13/16" to 19-1/2". Durable steel construction firmly supports your CPU.