HP 337 Black Inkjet Print Cartridge. Operating relative humidity range: 20 - 80 %, Storage temperature range (T-T): 15 - 35 °C, Operating temperature range (T-T): 15 - 32 °C. Package weight: 70 g, Weight: 67 g, Package dimensions (WxDxH): 113 x 37 x 141 mm