With a new latch design, the filter is easy to install and remove, just put it on and take it off - we recommend cleaning the vacuum filter regularly and replacing it every 1 to 2 months, depending on the frequency of use of the robot. been cleaned and how much floor it covers HEPA vacuum cleaner filter can filter up to 99.5% of airborne particles with a diameter of 0.3 microns Pleated design can provide greater filter area without sacrificing vacuum suction HEPA filter adopts E12 HEPA material Black It's 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 worried about allergies and reducing airborne particles. Note: Data is manual measurement, please allow 1-116cm error , due to differences between light and screen, there will be a certain color difference, the specific received in kind prevail.