The specification differences between the Duplo DC 616, Duplo DC 618 and Duplo DC 646 are outlined here...

	DC-616	DC-618	DC-646
Paper size Width x length	Min: 8.26 x 8.26” (210 x 210mm) Max: 12.58 x 18.11” (320 x 460mm)	Min: 8.26 x 8.26” (210 x 210mm) Max: 13 x 39.3” (330.5 x 1000mm)	Min: 8.26 x 8.26” (210 x 210mm Max: 14.56 x 26.3” (370 x 670mm
Minimum finished size	1.88 x 1.97” (48 x 50mm)	1.88 x 1.97” (48 x 50mm)	1.88 x 1.97” (48 x 50mm)
Paper weight	110 – 350gsm	110 - 400gsm	110 - 350gsm
Feeder/Exit capacity	3.93” (100mm)/ 3.93” (100mm)	3.93” (100mm)/ 3.93” (100mm)	3.93” (100mm) / 5.5” (140mm)
Card stacker ca pacity	1.57” (40mm)	1.57” (40mm)	2.36” (60mm)
Process speed 2cut/1crease on 8.5 x 11”	CCD off 10ppm CCD on 5ppm	CCD off 23ppm CCD on 19ppm	CCD off 30ppm CCD on 22ppm
Number of slits/ cuts/crease on 1 document	Max 6 slits Max 25 cuts Max 20 creases	Max 6 slits Max 30 cuts Max 20 creases	Max 8 slits （6slits a STD) Max 25 cuts Max 20 creases
Gutter deflector	Manual	Automatic	Automatic
Reject function	No	No	Yes
Job memory	80	250	250
Tolerance	+/- 0.3mm (business card: +/- 0.4mm)	+/- 0.2mm (business card: +/- 0.3mm)	+/- 0.2mm
Optional perforation	Feeding direction on ly	Both X/Y direction	Both X/Y direction
Skip perforation	No skip perforation	Both X/Y direction	Both X/Y direction
Waste box capacity	23.77 gallons	30.33 gallons	34.30 galons
Dimensions (W x D x H)	63.38 x 24.60 x 41.73” (1610 x 625 x 1060mm)	66.53 x 31.88 x 44.29” (1690 x 810 x 1125 mm)	98.81 x 30.11 x 43.70” (2510 x 765 1,110mm)
Weight	319 lbs. (145kg)	396 lbs. (180kg)	606 lbs. (275kg)

	DC-616	DC-618	DC-646
Paper size Width x length	Min: 8.26 x 8.26” (210 x 210mm) Max: 12.58 x 18.11” (320 x 460mm)	Min: 8.26 x 8.26” (210 x 210mm) Max: 13 x 39.3” (330.5 x 1000mm)	Min: 8.26 x 8.26” (210 x 210mm Max: 14.56 x 26.3” (370 x 670mm
Minimum finished size	1.88 x 1.97” (48 x 50mm)	1.88 x 1.97” (48 x 50mm)	1.88 x 1.97” (48 x 50mm)
Paper weight	110 – 350gsm	110 - 400gsm	110 - 350gsm
Feeder/Exit capacity	3.93” (100mm)/ 3.93” (100mm)	3.93” (100mm)/ 3.93” (100mm)	3.93” (100mm) / 5.5” (140mm)
Card stacker ca pacity	1.57” (40mm)	1.57” (40mm)	2.36” (60mm)
Process speed 2cut/1crease on 8.5 x 11”	CCD off 10ppm CCD on 5ppm	CCD off 23ppm CCD on 19ppm	CCD off 30ppm CCD on 22ppm
Number of slits/ cuts/crease on 1 document	Max 6 slits Max 25 cuts Max 20 creases	Max 6 slits Max 30 cuts Max 20 creases	Max 8 slits （6slits a STD) Max 25 cuts Max 20 creases
Gutter deflector	Manual	Automatic	Automatic
Reject function	No	No	Yes
Job memory	80	250	250
Tolerance	+/- 0.3mm (business card: +/- 0.4mm)	+/- 0.2mm (business card: +/- 0.3mm)	+/- 0.2mm
Optional perforation	Feeding direction on ly	Both X/Y direction	Both X/Y direction
Skip perforation	No skip perforation	Both X/Y direction	Both X/Y direction
Waste box capacity	23.77 gallons	30.33 gallons	34.30 galons
Dimensions (W x D x H)	63.38 x 24.60 x 41.73” (1610 x 625 x 1060mm)	66.53 x 31.88 x 44.29” (1690 x 810 x 1125 mm)	98.81 x 30.11 x 43.70” (2510 x 765 1,110mm)
Weight	319 lbs. (145kg)	396 lbs. (180kg)	606 lbs. (275kg)