Product review (4 stars): Not the best I've seen but does the job
I bought this to use with an old Duracraft evaporative humidifier with only NORMAL and HIGH setting. The humidifier sits on a stool in a 2nd floor laundry room that is 5-6 feet from a bedroom that has no room humidifier. The laundry room is right next to the master bedroom, but because of its size, we placed another room-size humidifier in the master bedroom but set it at the lowest of its four settings at night. With this set up, it's been comfortable in the both bedrooms and no-one has complained of dry throat yet. Our family has not had cold that got passed the irritating throat stage. While the filter certainly looks thinner than the ones we could buy when the stores still carried these older model of evaporative humidifiers, they are doing the job.