Universal wet & dry flat filter with a dust capture rate of 99.9%, certified for dust classes M and L and compatible with all single motor hoovers of model NT Tact and Ap by Kärcher. The filter is made of PES fibre material, is resistant to decay and moisture and is therefore ideally suited to vacuuming and frequently changing between liquids, fine dust and coarse dirt. The wet & dry model has a blue label to avoid confusion with other filters.