Product review (5 stars): what a difference
Unfortunately I put my filters in the dishwasher and they spotted. it wasn't easily noticeable so I continued to use them until a few years later one filter became loose from the rim when I was hand washing it.  I immediately looked on Amazon and found exactly what I wanted.  Two days later I had new filters that fit perfectly and made the fan look new. Filters are like shower curtains, you can clean and scrub but eventually you have to replace, and what a difference!