Product review (5 stars): Better than the OEM filter it came with.
Have been using one of these filters for about 6 weeks, works like it is brand new. I am a single unmarried male so I don't do housework like chicks do. I don't clean out my humidifier every week. I am a poster child for clogged filters, but this puppy just works great. It is noticeably better than the original filter that came with my humidifier, one of the 'teardrop' ones. NOTE: This will fit many humidifiers from various manufactures.