change mine out every month - these are fabulous

I love these filters you can tell The difference in the air

Great product, economical, dependable

Good filters. Reasonably priced.

Great product and excellent price

Good price. Good filters.

I have not yet opened this package, but I have used similar grade Filtrete filters before.

One of the best filters for pet dander and all the pollen.

This filters were recommended instead of the inexpensive ones that I was using

Keeps allergy down & air clean.