For Robovac 11SMax, 15CMax sweeping robot cleaner The filter has a filtering capacity of up to 99.99%, with H12 high-efficiency filtering ability, which can small particles such as food, hair, dirt and pet, and fine exceeding 0.1 microns from entering the brushless motor, extending the life of the machine Exquisite and delicate, highly matching with the equipment , and practical to use Easy to use and install, eliminating tedious installation steps Our spare accessory kit is the same as parts, so it fits your perfectly, and you can easily install without additional tools