These reusable washable filters are compatible with S40 and OV81 robot vacuums, available in 2 or 4 packs. The filter captures fine dust and particles, helping to maintain steady suction and clean exhaust airflow. The washable design allows for easy cleaning and repeated use, reducing the frequency of replacements and saving costs. Installation is quick with a snap-in fit that requires no tools and holds each filter firmly in place. Regularly cleaning or replacing the filters helps protect the motor and supports reliable vacuum performance.