Allied Telesis AT-MCR12 Media Conversion Rack-mount Chassis. Weight: 4300 g, Dimensions (WxDxH): 444 x 217 x 132 mm. Operating temperature range (T-T): 0 - 40 °C, Storage temperature range (T-T): -20 - 70 °C, Operating relative humidity range: 5 - 80 %. Safety: UL, CSA, TUV, IEC 825-1, CE, Certification: FCC Class A, IC Class A