550 sheet tray the 550 sheet tray supports a4 a5 jis b5 folio letter legal executive and oficio sizes paper 16 to 47 lb 60 to 176 gsm and card stock may be used from this unit 100 sheet multipurpose feeder the 100 sheet multipurpose feeder mpf supports a4 a5 a6 jis b5 folio letter legal executive statement and oficio sizes and 7frac34 9 10 dl c5 b5 and monarch envelopes sizes paper paper labels envelopes transparencies and card stock may be used from the mpf