Fractal Design Define R3 USB3.0 Black Pearl. Power supply: 0 W. Front fans installed: 1x 120 mm, Front fans diameters supported: 120 mm, Side fans installed: 1x 120 mm, 1x 140 mm. Width: 207.4 mm, Depth: 521.2 mm, Height: 442 mm. Power supply type: ATX, Dimensions (WxDxH): 207.4 x 521.2 x 442 mm, Ventilation fan(s): 2x 120mm