Product review (5 stars): Humidifier filters provide excellent regulation at all speeds.
Perfect fit and appear to be much  more durable than previous products I purchased that were more like molded cardboard, which became deformed and caused a major reduction in water mist production. The FilterBuy product allows much greater control of the mist production related to the fan speed selections on the humidifier.  I'll definitely buy this product again when its time for new filters. .