Product review (5 stars): Great wick filter. Don't wast money on anything else.
Last year I bought three different filters (not this one) and they were all terrible. They either fell apart, dried out or molded within a week or two. I bought the BestAir filter this year and it has been in use for three weeks with the humidifier running almost constantly and it is the same as the day I put it in. The wire mesh in the middle gives it ridgedity so it stands up in the holder without sagging and it is keeping the humidity level at 50 even with extremely dry conditions.
I will never buy another brand of filter now that I found this one. Great job BestAir!