Product review (1 stars): the filter had collapsed and was laying on the bottom like a wet wash rag
The purchase was for an AirCare model MA0800 humidifier which takes MAF2 filters. The replacements arrived on time, the only reason they deserve one star. I have another humidifier that suggests soaking the filters before installing. When I wet down a FilterBuy filter prior to installation, it wilted and could not be made to stand on its side as is required to be operational in the humidifier. I replaced it with a dry filter which I was able to stand on its end but when I checked the next morning, the filter had collapsed and was laying on the bottom like a wet wash rag.
The filters have minimal side support and are worthless unless your humidifier encases the filter in some sort of cage.