Review on 🦈 Shark Rotator Pro Lift-Away Vacuum Cleaner Foam and Felt Filter Kit XFF500 by Green Label Brand. Compatible with NV500, NV500CO, and NV501 models. by Adewole Sherman

Unfortunately this didn't work for my vacuum. The felt filter seems to be too big and the other too narrow, which means that the suction power is not what it should be. Update: After ripping my vacuum apart, I found out that my son had stuck a toy car in the base and that was causing a suction problem. This filter seems to work great as a backup filter. It seems a little bigger and firmer as mentioned above, but it still gets the job done while my other dries after cleaning. I will continue to use it as a backup.