Paper recommendations> 13FACE DOWN STACKERThe face down stacker on the top of the printer can hold up to250 sheets of 80g/m² standard paper, and can handle paperstocks up to 176g/m². Pages printed in reading order (page 1first) will be sorted in reading order (last page on top, facingdown).FACE UP STACKERThe face up stacker at the rear of the printer should be openedand the tray extension pulled out when required for use. In thiscondition paper will exit via this path, regardless of driversettings.The face up stacker can hold up to 100 sheets of 80g/m²standard paper, and can handle stocks up to 203g/m².Always use this stacker and the multi purpose feeder for paperstocks heavier than 176g/m².DUPLEX UNITThis option provides automatic two-sided printing on the samerange of paper sizes as tray 2 (i.e. all cassette sizes except A6),using paper stocks from 75-105g/m².NOTEThe duplex unit comes as standard with C5450dn.