19" 4U wall mount cabinet enclosure designed for network closets and education environments, where equipment is required to be organized and secure. Features adjustable front and back vertical rack mount rails, locking reversible front door, fully removable clip-in side panels and ventilated front and side panels for increased airflow. Interior vertical posts have square holes for included cage nuts and 12-24 threaded mounting screws. Available in black powdercoat microfinish and shipped fully assembled for quick installation. Top panel fan port for optional airflow upgrade.