This all aluminum CPU Lock Box, lightweight, has a hinged front door and a sliding tray that pulls out 28" to provide rear access for easy installation and service. The vented door and side panels mean that, and in most cases a blower is not required. Two flat key cam locks are used to secure the front door. Wiring cable entry is provided on the rear panel. Available with 4" 110 CFM fan and power bar (FRE142229).