The DV-E3 Triple-Motor Industrial Vacuum packs incredible power. This heavy duty industrial vacuum combines powerful performance with superior features to tackle a wide range of extreme applications. The unit produces a static water lift of 90" (2.3m) and an air displacement of 353 CFM (9.9 m3/min). It is equipped with a pocket filter which traps particles down to 3 microns and an external filter shaker to keep the filters clear. The collection tank is detachable and can wheel out from under the vacuum without removing the vacuum head or filter.