Filterbuy20x21x1 Air Filter MERV 11 Allergen Defense (2-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 19.50 x 20.50 x 0.75 Inches)

I like that it helps for allergies. This is as the same as most types of this nature in AC filters. I only see a color difference so far. But as most AC filters its hard to find perfect fits and also they are way over priced. But it is necessary as I am sure they know. I prefer to buy in a number of 4 bulk but this was all I could afford at the pricing of this. My first time using this brand so I will give it a try and remark at a later time perhaps.

Fits like a glove in the ac unit

I need a 21” x 20” filter. These filters are labeled 21” x 20”, and are actually 21” x 21-1/4”. They will not fit in my HVAC unit. My return window for these two filters has expired, but they are brand new. I hope I don’t lose $35 on this purchase.I received a full refund two months after the refund date after making contact with FilterBuy.Good filter just wrong size. Great customer service. I was never asked to change my review.Original review was Not 5 stars, but after communicating and refund is 5 stars.

It’s little tighter than the actual size but still quality is worth the money.

I have only had them for 2 weeks. Using on now and cannot find anything to complain about. The item is exactly how the advertisement indicated.

Excelente

The filters I received are labeled 20 x 21 x 1. However, it is actually 20.5" x 21" x 1". I don't know if it is a manufacturing defect but I had to cut .5" off of the side of the filter to make it fit (my old filter was trashed and couldn't be used again). I took a photo using a tape measure but it wouldn't let me upload. And yes, the other side length was 21".

I just installed 1 month ago in my AC thats only 1 year old and it clogged my AC and now I have a big leak. I think it doesnt let air flow thru