For all vacuum cleaners, the dust sucked in must eventually be disposed of. These filter bags make it easy and hygienic. The user comes with the removal of the filter bag, unlike bagless suction cups, not with the dust sucked in contact. Together with the filter element, the engine is protected and the exhaust air is filtered. Fine dust concentrations, which can adversely affect the respiratory tract, are kept to a minimum. The filter bags are an exact match to the Nilfisk-ALTO filter element.