Compatible with: Roomba 800 Series 900 Vacuum Cleaning Robots | Hepa filter for Roomba 800 900 Series substantially captures 99% of allergens, pollen, and particles as small as 10 microns by the innovative filter design. Filter replacement not only keeps your room tidy and clean,but also maintains your Roomba’s cleaning in peak performance. | These replacement parts are made of high quality PC, fully use of efficient and durable filter and side brush material. To keep Roomba running at best performance, the filter should be replaced every two months | Roomba 800 series 900 Hepa filter-12 Pack