The fine screening system for a particle size range between 0.1 to 8 mm. The Sizer 2000 (available as one-, two- or three-deck version) is characterized by the fact that the screen mat is set vibrating directly by so-called beater bars. The screen mat is pre-tensioned in conveying direction by the beating device. Each beating device consists of a shaft with 2 beater sides. At the outer end of each shaft, 2 unbalance motors are fixed outside of the machine. These set each beater bar in oscillating motion. The beating impulses prevent the screen mat from being clogged and fine particle deposits. The Sizer 2000 is a static machine. As a result, almost no dynamic forces are transmitted. Thanks to the variable vibrating width, frequency and inclination, the Sizer 2000 can be adjusted perfectly to different products and combines high material throughputs with minimum power consumption.