Compact size, powerful performance. The Karcher WD4 Premium is a powerful multi purpose vacuum that can be used for vacuuming up both dry and wet matter. Karcher's flat pleated, patented filter technology provides an enhanced cleaning experience for wet and dry applications without the need to change filter out. The filter is located in head of unit for increased container capacity, as well as easy filter change. Ideal for use in the garage, workshop, vehicle or outdoor entrance areas.