20X20X1 (19.75 x 19.75)Accumulair Platinum 1-Inch Filter (MERV 11) (4 Pack)

HELPED WITH THE ALLERGIES AND WASN'T TOO PRICEY. IF YOU DON'T CHANGE YOUR FILTERS YOUR LUNGS WILL FILTER THE DUST BUNNIES FOR YOU!

I used it for my air conditioner

I bought it when they were$18 .so naturally I took the bait. They work as expected with no problems. The only complaint is that the price jumped $10!Review (Part 2): Now it's 2019 and I have changed my tune. I have used the cheaper Filtrerte filrters and we are not liking them at all. I have done some resarch and find that these are very good filters. The best thing to do is check the MERV rating on any brand that you buy. Make sure the rating is between 7 and 12 for residental homes. This one is great and I am buyhing it again even at the higher price.

This is product is AMAZING for allergy-sufferers and in my opinion essential for those with any type of lung problems. They make breathing easier, they VERY noticeably reduce musty and other odors. MERV rating of 11 or above is what I have found to do the best job. It is a waste of money to buy cheap filters that only catch large particles. Don't be surprised if, when initially using these, they become dirty quickly and require changing more often.

Well, problem really wasn’t with the filters. I’m sure they would have worked fine. But after two attempts at shipping, and looking like they got ran over by another vehicle, I don’t think I will ordering filters online anymore