Rigid Silver Computer Holder. Substantial mounting can be used to mount Tower Computers to side or underside of desk. Holds tower PC's with the following dimensions: Minimum Width: 57mm - Maximum Width: 220mm Minimum Height: 325mm - Maximum Height: 555mm Bracket adjusts for width and height of CPU. Bolts tighten securely to hold CPU safely in place. Suitable for mounting under or alongside a surface of 25mm Supplied with fixing screws Optional Sliding/ Swivelling Unit available. See CPU87SSB