Aug 04, 2016· Narrow Belt Conveyor Systems. The GUFP 2000 boasts a frame that's only 50 millimeters (about 2 inches) tall, with a minimum width of 50 millimeters and a minimum length of only 310 millimeters (a little over 12 inches). The GUFP MINI has a similar configuration, but with a shorter 35 millimeter tall frame and 75 millimeter minimum width.