Aerostar 21.5x23.3125x1 Air Filter MERV 8 (Removes Mold, Pollen, Dust & Lint) - Electrostatic MPR 600 & FPR 5 - Pleated HVAC AC Furnace Air Filters - Pack of 6

Our A/C handler uses an odd size that we cannot buy locally. I emailed the serial number on our unit and was answered right away with the correct size. These filters are perfect, they fit and they are affordable! Win! Win! Win! Shipping was free and just took a few days. Another win!

This is a perfect filter. Not too restrictive to freeze up during Florida summers. Yet filters a lot of dog hair and dust and pollens! Great Filter!!

I thought I would never find the right size disposable replacements for my unit's washable filter, but these filters slide right in. We have two dogs and two babies, so I don't have time to wash the permanent filter every 3 weeks. Thank you for making odd sizes!

We had to replace our heat-pump recently and of course the new unit used a different size of filter. These cost about twice what I payed for the old filters which my grocery store carried. Unfortunately, the store didn't carry the new size I needed. This filter works about as well as the old ones and was about the cheapest that I could find. They are much better than the washable filter which do basically nothing.

Not easy to install but good price fast delivery easy to find.

looked for a filter with low Merv listing. with pets that shed I change a/c filters more often than probably most people.

product came earlier than promised. fits perfectly in an odd sized hvac. durability is outstanding. no more dust bunnies.

These work very well