The Lexmark 550 Sheets Tray helps ensure that the printer has sufficient media and offers efficient paper handling. It accommodates A4, A5, A6, executive, folio, JIS B5, letter, legal, oficio and statement paper sizes. Envelopes in sizes 7.75, 9, 10, B5, C5 and DL are compatible with this accessory. Paper weights from 16 lbs. to 47 lbs. or 60 gsm to 176 gsm, as well as transparencies, card stock and labels, can be used from this tray. Paper size, paper and tray-present and tray-low and tray-empty sensing are supported. This tray is compatible with the Lexmark MS7/MS8/MX7 printers.