This unit supports up to 500 sheets of paper (20 lb., 75 gsm). Envelopes, transparencies, card stock and labels are also supported with this unit.Up to 3 Output Expanders may be supported at a time. Any combination of Output Expander and 4-Bin Mailbox for up to a total of 3 devices may be configured.When both an Output Expander and High Capacity Output Expander are installed, the Output Expander must be installed above the High Capacity Output Expander.The Output Expander supports bin 'full' sensing. Features Country of origin China Maximum capacity 500 sheets Weight & dimensions Width 421.6 mm Depth 381 mm Height 165 mm Weight 2.58 kg Other features Standard media sizes 10 7 3/4 9 A4A5B5 C5 DL ExecutiveFolioJIS-B5LegalLetterStatementUniversalOficioA6 Recommended media weight (imperial) 16 - 47 lbs.