FilterBuy AFB Silver MERV 8 20x20x1 Pleated AC Furnace Air Filter. Pack of 4 filters. 100% produced in the USA.

Item was on-time and as advertised. Excellent service and quality.

I tape one of these to the back of a 20" x 20" box fan for a great poor man's air filter that probably works better than more expensive ones.

It works just fine. Good quality It doesn’t have a smell, by the way it took the bad smell out of the house! Air flows easily Good thickness! I recommend it.

Great deal, and work well.

They might be OK but price is not on par with the competitors. It's a pack of 4. I realized that only after I got it delivered. I know, I know it's my miss - it's written there - I see it now. The one I used before was a 6 pack for the same amount paid from another reputable distributor. They must be 50% better, cleaner, longer lasting etc. to justify 50% price difference.