Lexmark 50G0804 2100 Sheet Tray unit supports A4, A5, A6, Executive, Folio, JIS B5, Letter, Legal, Oficio and Statement sizes | Paper (16 to 47 lb, 60 to 176 gsm), transparencies, card stock and labels may be used from this tray | Envelopes in sizes 7 3/4, 9, 10, B5, C5 and DL may also be used from this tray | Paper size, paper and tray-present and tray-low and tray-empty sensing are supported | The optional caster base may be required when the product is configured with the spacer or additional trays (1 to 4)