What's In The Box: 4 x High-Efficiency HEPA Filters. Each package includes four HEPA Filters, meeting your long-term replacement needs

Compatible Models: These Replacement Parts are Compatible with Roborock S6 MaxV/Pure, S6, S5, S5 Max, S4 Max, S4, E5, E4, E20, E25, E35 Robot Vacuums

Efficiency and Performance: The High-Efficiency HEPA Filter captures up to 99.97% dust, dirty, pet hair, and small particles

Maintenance: To keep your vacuum cleaner running at peak performance, Please clean the filter once per week (twice per week in homes with pets) and replace it every 2-3 months

Shipping and Installation: Shipping with a strong box to prevent from being damaged in transit. It is easy to be replaced and installed on your robot vacuums. No additional tools are required