Product review (2 stars): Stops working too quickly
This aftermarket replacement for the Kenmore 14911 filter is a poor substitute for the original. The Kenmore 14911 filter is a Sears-branded version of the OEM Essick HDC-12, also available under the "MoistAir" brand name. This BestAir filter is a third-party replacement.

Unlike the OEM wick, the BestAir wick quickly stops working. Within two months of winter operation, this wick stopped wicking at all. It was sitting in water, but the portion of the wick that was above water wasn't the least bit damp. The construction of the BestAir wick is also less substantial than the OEM wick.

While the BestAir may be slightly cheaper than the Kenmore or Essick MoistAir OEM wicks, it's a false economy. You'll wind up having to replace the BestAir filter much more often in order to get any operation out of your humidifier, and even then you won't get the same level of humidification performance out of it.