(1) cylindrical cartridge filter, fan manufactured by Nedermann, serial # 663, driven by 1.5 kw, 3/50/220/240/380/420 volt, 2800 rpm motor, shaker manufactured by Nedermann, serial # 529, driven by 0.25 kw, 3/50/220/240/380/415 volt, 2800 rpm motor, unit with built on timer, openings: top: 1-150mm, side: 1-150mm (fan connection), bottom: 1-250mm, unit mounted on carbon steel frame