General description vhbw offers a set of three flat-fold pleated filters designed for multi-purpose industrial vacuum cleaners. These precision-fit filters ensure easy removal and exchange, making them suitable for both wet and dry vacuuming. They help maintain a dust-free environment, making them ideal for allergy sufferers. Technical specifications Filter class: L - M Dimensions (L x W x H): 21 x 11.5 x 5.6 cm Weight of each filter: 130 g Material: plastic / paper Form: rectangular Colour: yellow / orange Washable: Yes Recommended replacement: every 6 months Compatibility and accessories Compatible with Festool CTM 33 E/LE, CTM 55 E, CTM 44 E/LE Replacement for: 452065, 6.904-068.0, 6.904-156.0 Usage These high-performance filters have a high dust-holding capacity, ensuring efficient dust capture and retention. They allow for both wet and dry vacuum cleaning without the need to change the filter in between. Regular replacement is recommended when they no longer clean effectively,