EASY TO INSTALL- Just open your vacuum, remove your old and worn filter, pop your new filter over the cage and let your vacuum breathe again! DO NOT PLACE ATTEMPT TO PLACE FILTER OVER DRY FILTER> REMOVE DRY FILTER PRIOR TO PLACING FOAM FILTER ON CAGE.
MAXIMUM-EFFICIENCY - Use on filter cage for vacuuming water, picking up wet messes when used alone.