Product review (5 stars): A good price for a filter that works great
An exact fit in the Honeywell HCM-6009 Cool Moisture Console Humidifier. After the stock filter got all dirty and worn out, I replaced it with one of these, and suddenly the humidifier was able to pump out moisture quickly and quietly. These filters are cheap enough where you can replace them as soon as you notice your old one struggling to keep up. Of course, using bacteriostat to keep mold and buildup away will only help prolong the life and keep things running smoothly.