HP 131 Black Inkjet Print Cartridge. Operating relative humidity range: 20 - 80 %, Storage temperature range (T-T): 0 - 40 °C, Operating temperature range (T-T): 15 - 35 °C. Dimensions (WxDxH): 116 x 36 x 115 mm, Weight: 30 kg, Package dimensions (WxDxH): 141 x 113 x 37 mm