The UL Listed (Standard 1678) portable rack is ideal for schools, training facilities, studios, offices and institutions of all kinds that require a mobile equipment rack with locking security. The LPR is 22" deep with 14 or 21U panel space. Includes heavy-duty casters, side panels with recessed handles, recessed rear door, surface-mount front door, and one-pair of adjustable mounting rails tapped 10-32. Vented sides, vented rear door and vents above and below front door allow passive heat dissipation. Black wrinkle powder epoxy finish.