The Bosch VAC series dust extractors come with the best in class combination of air flow and suction power, which makes this unit ideal for dust extraction. The VAC140S is capable of wet and dry pick up. When paired with a HEPA filter (accessory VF120H - not included), this unit has been independently tested to meet the EPA definition of a HEPA vacuum. The semi-automatic filter cleaning system provides the benefit of allowing the filters to be cleaned whenever it is needed. Use the convenient lever on the nozzle to clean the filters. Power tool activation reduces the need for a second extension cord, as the tool can be plugged directly into the dust extractor. Heavy duty wheels, a locking castor, a metal frame, and L-BOXX compatibility make this more than just a typical dust extraction unit. Click the L-BOXX on top of the vacuum to create your mobile work station.