Lowell LER-2122 Enclosed AV Rack with Rear Door - 21U x 22"DModel LER 2122 AV rack is fully welded and reinforced at load bearing junctions for robust support. Welded side panels feature upper and lower vents for passive ventilation. The rack includes adjustable mounting rails that can be repositioned deeper into the rack if needed to accommodate equipment controls. Beveled corners. Black textured powder coat finish. Order the rack with or without the rear door. An optional 21U front door is also available