Constructed in light duty 16-gauge steel. Includes two (2) pairs of EIA-310-D compliant 19 inch square hole mounting rails. Rails are adjustable. Includes one (1) locking tempered glass lightly smoked reversible front door. Includes one (1) pair of locking removable side panels. Front and side of frame includes venting for air flow. Rear cable access. Provision for optional fans on top panel. Finished in black powder paint.