The Evolution is derived from the basic principles of the Module System. It is made entirely out of food grade plastics and stainless-steel components. Plastic, due to its’ dimensional stability in multitudes of humidity and temperature environments, enhanced wear resistance to abrasion, and having a third of the moisture absorption rate of standard wood boxes. Stainless-steel, because of its ability to withstand the destructive nature of sifting, as well as rust. The Evolution is also made in a modular format, connecting the side rails by the use of our patented corner block system. This allows us to manufacture these trays to any machine size, as well as allows simple replacement of parts should changes of flow within the sifter be necessary. These blocks also enable us to tag each box by what passage it belongs to, what number it is in the section, and what sieve covering has been allocated to that tray