Cooler Master Elite 330U. Material: SECC. Front fans diameters supported: 120 mm, Rear fans installed: 1x 120 mm. Width: 189 mm, Depth: 485 mm, Height: 425 mm. Ventilation fan(s): 1x 120, Internal drive bays: 6x 3.5", External drive bays: 4x 5.25", 1x 3.5"