Dimensions: 21.65″ Length x 17.72″ Depth x 24.53″ Height ; The wall mounting holes on the 12U cabinet are spaced 16 inches center to center for greater stability, matching standard construction framework Fully adjustable mounting rails with square holes for easy equipment mounting; Total usable equipment mounting space of 14.6″ (370mm) front to back Removable top and bottom panels for cable management Cooling Fan – One premium quiet cooling fan is included Weight capacity:110 lbs; Sturdy welded frame structure (Easy Assembly Required).