Lexmark 250 Sheet Duplex Unit in More Detail
250 Sheet Duplex Unit for Lexmark T64x, X644E, X646 Printers. This option offers two-sided printing capability. Supports A4, A5, JIS B5, Letter, Legal, Executive and Folio sizes. Paper (16 to 47 lb., 60 to 176 gsm) and card stock may be used with this unit.