Product review (5 stars): Performs very well
This product is different than the original folded paper wick however the transfer of water vapor to the air works just as well as the folded paper.  These filters will hold up to using a lime remover.  I soak the filters in the sink in a lime remover for a half an hour then put them back in the humidifier.  The filters hold up to this cleaning several times before they have to be replaced.  The aluminum center support helps the filter keep their shape during this process.  I have had this humidifier for many years and continue to purchase these filters.