Work cleanly and healthily. The main filter made of cellulose fibre material is suitable for vacuuming fine dust and coarse dirt of dust classes L and M. This enables work to be carried out efficiently, cleanly and systematically and reduces hazards to health. Suitable for extracting mineral and wood dusts|Filters class L and M dust|Flat fluted filter with restraint value of 99.9%. Filters residual dust not retained by the filter bag so that clean air is directed back into the room|For absorbing household and industrial dust. Filters residual dust not retained by the filter bag so that clean air is directed back into the room|for vacuuming dusts posing a medium hazard in dust classes L and M|not suitable for mobile dust extractors with AUTOCLEAN function|FSC™-certified. for CT SYS and CTC SYS