I purchased this filter a few days ago. Before installing this filter, my husband was sneezing very often everyday. We were so amazed the first day, he did not sneeze at all; everyday since, it has been the same. I know a person would have a hard time believing it could work so well and so fast, but it is absolutely true. Thank you for making such a wonderfully made product.
I have been using this particular brand and type of furnace filter for decades! It seems to do a fabulous job of catching the gunk out of the air that comes through the furnace system. Two thumbs up from me!