pětiúrovňový mailbox(5 prihradek po 120 listech = 600 listu) This output option offers five output destinations and installs on the top of the printer. Supports up to 120 sheets paper (20 lb) per bin (~600 total) and supports A4, JIS B5, Letter, Legal, Executive and Folio sizes. Only Paper (16 to 24 lb, 60 to 90 gsm) may be used with this unit. Up to two units may be installed. If using the StapleSmart Finisher, only one unit may be used.