Xerox DUPLEX 022N02856 is a duplex assembly for the Phaser 3330 and WorkCentre 3335/3345 printers. It supports automatic two-sided printing, helping these devices print on both sides of the paper without requiring each sheet to be turned by hand.
The service parts list places this item in the Duplex Assembly and names components such as duplex feed rollers, a paper duplex guide, an alignment bracket, gears and timing belts. Together, these parts form the paper path used for duplex printing.
This replacement assembly is intended for the listed Xerox printer models. The confirmed part information identifies the assembly and its function; it does not specify package contents beyond the assembly itself.