Filterbuy 20x20x1 Air Filter MERV 11 Allergen Defense (6-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 19.50 x 19.50 x 0.75 Inches)

Amazing customer service! Ordered wrong size AC filter and they helped me promptly. Correct size on the way.Will order from this company for life! Highly recommend this company and their products.

I purchased box of 6 30x36x2 filters, invoice and outside of package stated that is what I had. I did not need to use until 5 months later, but once I opened the box found that I had 30x36x1, the wrong size. Even though the return date was long past, Filterbuy sent the correct ones within 2 days.

This product is truly an excellent one. I feel the fresher air with this filter. It is worth the monies. Thank you.

My house has an HVAC system with a rather unusual filter size. Multiple HVAC contractors have commented about it, and whenever my system has annual service performed they always note that it isn't a size that they carry. It also is only available at home hardware stores sporadically.These filters arrived in good shape, no loose connections or gaps in the filters. The quality is also good, I have noticed that my CPAP filter gets dirty much more slowly with this brand filter than a different one I used previously. Not sure if its the color of the filter media or some other aspect, but it appears to get dirty faster than other filters I have used in the past. Not a problem from my perspective as that must mean that it's removing particulates from the air. I change it about 30% sooner than other filters.

I always buy the 3 month style of filter for my A/C. Although, I change them out every 2 months. We have lots of pollen in Florida.

Fits and have been working well seeing a lot of trapped dust.

Fit functional and working great and made in the USA.

Good filters super fast shipping and a fair price.