*RICSP-5300DN,RICSP-5310DN: 500-sheet capacity. Supports paper sizes up to 8.5" x 14" and paper weights up to 59 lb. Bond/120 lb. Index. A maximum of 4 additional Paper Feed Units may be added to the mainframe for a maximum paper capacity of 2,600 sheets. Caster Table is required when the maximum of four (4) optional Paper Feed Units (Type PB1100) are installed for a floor standing configuration. Recommended when one (1) or two (2) additional Paper Feed Units (Type PB1100) are added for a floor-standing configuration. Recommended when three (3) additional Paper Feed Units (Type PB 1100) are added for a floor-standing configuration.