Dimensions 110 mm x 53 mm This replacement filter is suitable for iRobot Roomba series 800, 850, 860, 861, 864, 866, 870, 871, 880, 890, 891 and 900, 960, 961, 964, 980 vacuum cleaners. Contains 6 filters. Please confirm your Roomba model and components before ordering. The highly efficient, double-layer particle filter can capture invisible particles more effectively, ensuring a clean and fresh air environment. The material is sturdy and durable, does not shed or jam, and helps the mop clean everywhere, especially in invisible corners, making the cleaning efficiency unique and superior. Includes 6 replacement filters for the Roomba 800/900 series.