BNX TruFilter 20x20x1 MERV 13 (4-Pack) AC Furnace Air Filter - MADE IN USA - Electrostatic Pleated Air Conditioner HVAC AC Furnace Filters - Removes Pollen, Mold, Bacteria, Smoke (Actual Size: 19 11/16’’ x 19 11/16’’ x 3/4‘’)

I bought these to tape behind my 20” Hurricane boxed fan that I put in front of a portable hosed air conditioner. So far I was surprised on how much dust it had collected. Over the month it had been collecting a lot of things I was surprised to see as I could only imagine this was going through my fan and into my lungs. My fan also has stayed white and not dirt black as it had without the filter. To whomever posted their photo of their makeshift filter with the boxed fan, thank you! It was because of that photo I decided to try it out myself. And I am so glad I did. Highly recommended!

heater and air conditioning, duct filter, to keep dust out of home.

Works fine

I dont usually write reviews, but when I do, it is either worse or best review. All I say is, this is much, much better than Walmart and homedepot filters. Very good made, weldone. I recommended this filter and I think you wont regret it.

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This filter is the best I have found. Our home had no carpet so the air filter catches a lot more dust. These catch an incredible amount. I change them out about every two weeks or when they turn dark gray in color. Other brands take longer to turn dark but I think thats because they arent catching all the dust and pollutants.

I had a little issue when getting this filter in. When it arrived the box was crushed which was disappointing because the filter itself had a crease down both sides which I was not comfortable putting in my AC filter drawer. I contacted the seller and got a replacement order sent. When the new filter arrived it was in great shape. No issues. This filter is much better than the one Ive been using. The design is similar, but the filters look higher grade on this compared to the ones I normally use.

Great filter at a reasonable price

Mervyn 13 great quality and price.

Had smokers in the house so bought these to help remove the smell, fantastic! Well worth the extra money