Product review (1 stars): Not worth it
Bought these as a replacement for the original filters. They are pretty worthless.  The humidifier has a good/bad indicator on top to tell you when to wash or replace the filter.  The old filter, after two winters, had been washed twice, and now permanently indicated 'bad'.  So we bought these filters as replacements.  After 2 weeks use, they also began to indicate 'bad'.  When you take the filters out to wash them, you can see that the moisture does not wick up even above the level of the water in the bottom.  In other words, they are not wicking at all!  Complete waste of money.