The ERK Series ERK-4425KD-LRD 44RU 25" Wide Enclosure Rack from Middle Atlantic is a standalone rack with solid sides. The rack's weight capacity is 1,000 lb, and it is constructed of steel with a black powder coat finish. This unit is equipped with one pair of 11-gauge steel rack-rail with tapped 10-32 mounting holes in universal EIA spacing, black e-coat finish and numbered rack spaces. The Rack includes solid side panels with vertical slotted vent pattern at the top and bottom and laser knockouts for cable pass-through. The top and bottom racks feature vertical slotted vent pattern. The grounding and bonding stud are 1/4"-20 threaded, and located in the base of the enclosure.