Designed to separate coming from harvesters or other devices threshing grain and seeds of cereals, cereals, legumes, oilseeds, grass seeds from large and small impurities (width and thickness). The grain heap is supplied to the supply device with a system of dividers is distributed across the width. Next, the heap is divided into two equal parts and fed into sieve two parallel sieve mill. Iron arguments "FOR!" the sieve module SLM: Used in a block with other grain-cleaning machines; Meets the demands of modern cleaning; Ball cleaning reduces energy consumption and maintenance costs; Effective cleaning of fine and krupnosortnyj cultures; The allocation of part of the big impurities on the upper tier of the sieves; Rigid frame; Minimal vibration due to the use of systems of suspensions (vibrator); Balanced sieve units with an effective screening area.