The 14x25 filter is probably fine if you have a smaller system (2 ton AC or less). But at 1200 cfm (typical for 3 ton AC), the airflow restriction is 0.47 wc which is quite high. It caused my AC to throw an error, even with a new filter right out of the package... not after it ran a while and caught a bunch of dust and stuff. Other Filtrete options have better airflow performance. Just wish Sam's sold em!

Best price I've found for these ultra filters. Colds and flu are much decreased since starting to use these filters. Dust is minimal (for Nebraska). Would recommend it someone in your family has pets or allergies.

Excellent filter at a great price! It fit perfectly, seems very well made, and gives me confidence in the air quality in my home. Definitely a great deal.

They fit the opening OK and seem to work fine. I can't tell by using them if they do or do not capture allergens, bacteria and viruses.

We have used the Filtrete air cleaners in our a/c and heater for many years and have been very happy with them. They will easily make it two months without replacing, but we choose to replace them every month.

Good value but filter size is just a hair too big for the vent. Had the same problem with our previous house and this brand. Requires bending the filter a little to make it fit. Wish a big company like 3M would cut these to proper size.

Did not fit properly was off by a few mm it’s the same size as the one currently in the vent however not sure if it was not cut properly when manufactured but had to squish it in place

These are great. We switched out after six months and it was disgusting to see the collection of dust particles. Great to know it wasn't in the air we breathe.

You normally save a lot when you buy in bulk but this is not one of those moments. It’s about the same price at H-E-B. And we normally get a higher rated filter

These have made a big difference in the amount of dust we get on our furniture. Plus the price for 4 is what you would pay for only 2 at most other stores.