Product review (5 stars): Works like it is suppose to.
We needed new filter for our Holmes Air humidfier. It is a large room and we purchased a tower humidfier for the  room and it works really well in an that size room. Coughing way down. Stuffy head way down, headaches way down...Works like it is suppose to. Only problem you can only buy in pks of 3 and the humidifier hepa filters and it only uses 2.. so we are stuck with one extra.