With a new latch design, the filter is easy to remove. install and remove, just put it on and take it off - we recommend that you clean the vacuum cleaner filter regularly and replace it every 1 to 2 hours. 2 months, depending on the frequency of use of the robot. been cleaned and how much floor it coversHEPA filter for vacuum cleaner can filter up to 99.5% of airborne particles with a diameter of 0.3 micronsPleated design can provide larger filter area without sacrificing vacuum suctionThe filter HEPA adopts E12 HEPA materialblackIt is our superior filter designed to catch the things that make us sneeze and itch. Our ultra-high performance HEPA* type filter uses HEPA E12 material, which can capture at least 99.5% of airborne particles with a diameter of 0.3 microns. Ideal for those concerned about allergies and reducing airborne particles.