Review on 🧹 Compatible Eye-Vac EV-EF Exhaust & EV-PMF Pre-Motor Filters - Think Crucial Replacement Vacuum Filters for Eye-Vac Professional Units - Bulk Pack (1 Pack) by Amy Lucero

In other reviews, the filter that you screw on at the top doesn't fit at all. The problem, however, is the gasket around the top of the filter where it screws into. The original has a piece of soft foam that is very easy to refill. Revain has a rubber ring that resembles Madonna's bracelet. Unfortunately, this does not allow it to be pushed in deep enough to snap into place. See the second photo to see the ring I am talking about. I just replaced the original phone ring with the rubber ring in the second photo and now it fits perfectly.