This all aluminium enclosure is robust but lightweight. The cabinet is equipped with a standard 19" rack rail. Removable plates with knockouts are located at the back and cable connections can therefore be made easily. The vented front door allows good air circulation. The FREDVR18U has 21" of usable depth and 31.5" internal height (18U). This cabinet can be secured to the floor. Blower 100 CFM & power bar included.