Perfect Compatibility: Cartridge filter for Kärcher WD1, WD2, WD 2 Premium,WD3P, WD3 Premium, WD 3200, WD 3230, WD 3500, SE 4001, SE 4002, MV 2, MV 3, MV3P, A 2004, A 2054 ME, A 2101, A 2120, A 2204, A 2254, A 2604, A 2654, K 2150, KNT 2 PremiumPremium Materials: Using premium HEPA filter paper and Melt Blown Cloth, the product is made of high-density ABS material according to the original size. Dense blown cloth and HEPA filter paper with activated carbon particles eliminate pecular odors, purify the air and absorb harmful substances. No overheating of the motor thanks to good air permeability, for better suction power and extend the life of the vacuum cleaner. High-efficiency filter: Made of highly durable and environmentally friendly material, the highly efficient H12 HEPA filter can remove 99.98% of dirt, hair and small debris down to 0.3 µm (0.00003 mm). Powerful filter for deep cleaning of your home. Easy to use and install: The filter is easy to install and durable. Replace in