The HP 78A Dual Pack (CE278AF) contains two genuine HP 78A black LaserJet toner cartridges in one carton, the Africa/Asia regional code of HP's CE278AD twin pack. Each cartridge is rated for about 2,100 pages, so the pack yields roughly 4,200 pages in total, measured to HP's ISO-based method. It is made for the HP LaserJet Pro P1566 and P1606dn printers and the LaserJet Pro M1536dnf multifunction, as printed on the carton, and it suits small offices and home offices that print everyday letters, invoices and reports and want a spare cartridge on hand to avoid downtime. Buying the twin pack usually costs less per page than two single cartridges. The box contains two toner cartridges and a recycling guide. The packed carton measures about 375 x 226 x 125 mm and weighs about 1.6 kg.