Filterbuy is undoubtedly, one of the best, if not THE best, online store that I deal with. They are prompt, accurate, and anxious to please. They take care of questions or mistakes at once. No waiting.
I normally buy another brand filter, but because of the filter size, I had by this brand. So far it is doing well. I noticed an immediate difference in the air quality. I would buy it again when its time.