Filters Fast 20x21x1 Air Filter Merv 13, 1" AC Furnace Air Filters, Made in the USA, Actual Size: 19.75" x 20.75" x 0.75”, 6 Pack

Our indoor filters are the odd size of 12x30x1 and my allergies are horrible. The highest Merv rating I could find locally was an 11, and it wasn’t doing me any favors. These filters saved me! Unfortunately you can only buy them in bulk, but honestly that’s the only downfall that isn’t much of a downfall. Now I’m prepared to replace the filters as often as we need to, and it really was a great bulk price. These filters are sturdy and of great quality. Don’t let the price scare you, take the leap! Definitely worth the peace of mind.

The replacement Hepa seems to fit and work fine . My contact dermatitis to dimethyl fumarate cleared up a great deal after first night's sleep . Slept like a baby . . . for a change . The new Honeywell purifier also working fine . I had them both going full throttle . I looked at the old complaints , and did not notice any problem . And I don't want to go looking for problem . It is a lot of trouble to take things back and then wait again for a replacement . Also put a MERV-13 Filtersfast in my apartment intake . Been fighting this allergy for over a year off and on , mainly on for the first year . Destroyed those 2 leather-recovered-with-fabric La-Z-Boy recliners from China , but the dimethyl fumarate got into the carpet and the air . Fingers crossed !

I like the ability to clean air.

I have found the box stores (Lowes, Home Depot) do not stock this size (OK so our house if from the early 1970s). The delivery was fast, quality good and price reasonable. Glad I can still find the size I need.

These are the highest rated MRV for my size. I like change them every few months so great what can get a package.

The air handler in our rental is an odd size and we were able to find replacements through Amazon!

These filters work well. I change my filters about every 6 weeks and they have always caught a lot of dirt. The air seems fresh in the house. I buy merv 13 as it supposedly catches some small particles. Obviously I have no way to test this. However, my wife had covid and we live in a small townhouse. I ran the A/C all the time and I didn't catch it even though I was in the same room. The filters are well made.

The Only Kind I Order.The Reason Being, I Have Been VerySatisfied With My Very Order.I Have 4 Puppies In My House, And INoticed How Clean These AirFilters,Keep My Air Cleaner.