Product review (2 stars): *EDITED- See below* This is not what you are looking for. Take it from me and the other low reviews, This filter is garbage.
EDIT 2/19/18 - HQRP have reached out to me concerning this filter, and In light of their inquiry and proposed actions, I must add that HQRP provide ABOVE AVERAGE customer service. Based on how they handle business, I will again consider their products as an option going forward. This filter is flawed, but HQRP customer service exceeded my expectations. Added a star..

This was a terrible choice. It really doesnt wick well at all. Only half the filter is damp. Even if it did wick water like it is supposed to, this filter is half the thickness of stock filter, meaning half the surface area, meaning your nice humidifier would be half as effective as intended. But thats not the case. Not only is this filter half the thickness of the original, it only wicks water half way up, so now your humidifier is functioning at about 25% of what it should. Ive had it running with this filter for hours and RH measured a few feet away has not even budged. With the original filter, Id get an increase of 15% in this same amount of time.

Not only is this filter near worthless, it was rather expensive too. Looking at the picture, I thought the outer black layer was good reinforcement, but it is just paper too. If you're thinking of getting this filter, you may as well just throw your humidifier out the window into the street. Save yourself $20 and look elsewhere..