The HP 312A Tri-Pack (CF440AM) contains three original HP 312A LaserJet toner cartridges - cyan, magenta and yellow - in one box. These standard-yield cartridges fit the HP Color LaserJet Pro MFP M476 series, and buying the three colours together is convenient for offices that replace them at the same time. HP rates each colour cartridge at about 2,700 pages. HP Original toner is designed for the printer's imaging system, and HP positions it for professional-looking documents and marketing materials with fewer reprints and wasted supplies. The box weighs about 2.16 kg and measures 385 x 327 x 125 mm. HP recommends operating between 10 and 30 degrees Celsius and 20 to 80 percent relative humidity, and storing between -20 and 40 degrees Celsius. Empty cartridges can be returned through HP's Planet Partners recycling programme where available. The black cartridge is sold separately.