Maintain Roomba's cleaning performance while reducing infiltration of dust, pollen and other allergens Snap the filters on and off with minimal effort Compatible only with AeroVac Bins and included with Robot SKUs 53601 and 55101 The Aerovac Air Filter for Roomba 500/600 Series is the latest breakthrough in cleaning technology. Regular replacement of the AeroVac filter will maintain Roomba's cleaning performance while reducing infiltration of dust, pollen and other allergens. The filters are easy to see and access, so you can snap them on and off with minimal effort. Compatible with AeroVac Bin and included with Robot SKUs 53601 and 55101. Unsure of which model you have? It's easy to check - see the second image above.