COMPATIBILITY - Our replacement parts are designed to fit Roborock S6 MaxV, S6, S6 Pure, S5, S5 Max, S4 Max, S4, E2, E3, E4, E5, E20 E25 E35 S50 S65 Robot Vacuum. Before purchasing, please ensure that you check your Roborock model. PREMIUM QUALITY - Our replacement Roborock filters have a good filtering function. The edges of the filters are perfectly bonded to the plastic frame, ensuring a complete seal. This design helps extend the lifespan of your Roborock vacuum. EXCELLENT PERFORMANCE - The filter with seal design captures 99% of fine dust through the filter, providing fresher air for your family and improving your quality of life. PRODUCT SPECIFICATIONS - Each package includes 4 filters for Roborock S6 MaxV, S6, S5, S5 Max models. CLEAN AND REPLACE - It is sturdy enough to use many times. To keep your robot running at peak performance, The filters are recommended to be replaced every 2-4 months.