Product review (2 stars): Terrible; do not buy
These wicks are really quite terrible.  I purchased these because the price of the OEM wicks for my humidifier recently rose to a bit above what I think they should be selling at, and these seemed like a reasonably priced alternative.  They are the right size, and fit my machine just fine, however that is the only praise I can give.  The OEM wicks are quite stiff, and these are not.  As soon as they get wet, they collapse.  Shortly after I installed the first one, my humidifier stopped using water and I was worried something was wrong with the machine.  When I opened it up, the wick was almost completely submerged, and was the clear reason for the lost functionality.  This kind of product has the simplest purpose: absorb water and stand vertically under a fan; this product fails miserably at the latter, making it a complete waste of money.  Spend the extra money on a proper OEM unit for your machine.