General description The 4X Cartridge Filter is designed for compatibility with various KaRcher vacuum cleaner models, including WD1, WD2, WD3, and several others. This high-efficiency filter utilizes premium materials to ensure optimal performance and longevity. Technical specifications Material: High-density ABS plastic Filter type: H12 HEPA filter Filtration efficiency: Removes 99.98% of dirt, hair, and small debris down to 0.3 µm (0.00003 mm) Color: Yellow Package Contents: 4 Cartridge Filters Measurement allowed error: +/- 1-3 cm Compatibility and accessories Compatible with models: WD1, WD2, WD2 Premium, WD3, WD3 Premium, WD3200, WD3230, WD3500, SE4001, SE4002, MV2, MV3, MV3P, A2004, A2054 ME, A2101, A2120, A2204, A2254, A2604, A2654, K2150, KNT2 Premium Installation Easy to install and replace in seconds without contact with dirt Vacuum parts can be washed and reused Usage Recommended to renew the vacuum cleaner filter every 3 months for optimal performance, especially in homes