HP Color LaserJet Q3964A Imaging Drum. Page yield: 20000 pages, Print technology: Laser, Compatible products: HP Color LaserJet 2550/2800. Operating temperature range (T-T): 15 - 25 °C, Operating relative humidity range: 20 - 80 %, Storage relative humidity range: 10 - 90 %. Weight: 1.75 kg