Compatibility: 4 Foam Filter + 4 Felt Filter, Compatible With Shark Ai Av2501S Av2501Ae Rv2502Ae Rv2520Aous Av2510Aous | | High Quality: These Vacuum Cleaner Filters Are Made Of High-Strength Materials, Durable Enough To Last A Long Time | | High Performance: The Vacuum Filter Replacement Kit Can Clean Dirt, Dust And Trash Effectively, Ensuring The High Efficiency Performance Of Your Robotic Vacuum Cleaner | | Washable And Reusable: These Vacuum Filters Can Be Washed And Reused. Just Rinse The Filters In Water And Make Sure The Filters Are Completely Dry Before Reusing Them | | Easy To Replace: The Robot Vacuum Replacement Parts Are Easy To Replace And Install. To Get The Best Performance, It Is Recommend To Replace The Filters Every 2-3 Months | |