High-quality non-woven filter bag, cleans dust deposits inside the filter bag automatically. Switching on the mobile dust extractor puffs up the SELFCLEAN filter bag. Switching off the mobile dust extractor collapses the bag, removing dust deposits inside the SELFCLEAN filter bag. For longer cleanliness and consequently a more sustained high suction power. This enables work to be carried out efficiently, cleanly and systematically and reduces hazards to health.