General description vhbw offers a set of 3 flat-fold pleated filters designed for multi-purpose industrial vacuum cleaners. These precision-fit filters ensure easy removal and exchange, making them compatible with both wet and dry vacuuming. They are ideal for allergy sufferers, as they help maintain a dust-free environment. Technical specifications Filter class: L - M Dimensions (L x W x H): 21.3 x 11.5 x 5.5 cm Weight of each filter: 139 g Material: plastic / paper Form: rectangular Colour: yellow / orange Washable: Yes Recommended replacement: every 6 months Compatibility and accessories Compatible with Kärcher models: K3501, K3500E, K2000TE, NT 14/1 Ap, NT 14/1 Ap Adv, NT14/1 Replacement for: 259.307, 452923, 500558, 6.904-068.0, 6.904-156.0, 454700, 0702400195 Usage These filters allow for efficient vacuuming of both wet and dry materials without the need to change filters in between. They effectively capture and retain dust, achieving excellent filtration of dry fine dust and