Product review (2 stars): One Problem for Kenmore Use
These filters restrict air flow in my Kenmore humidifier.

The result is that the motors have to work harder and they overheat - the odor of melting insulation was my first clue. I also removed the cover and placed my hand on each motor and they were definitely very hot (ruling out that I had one faulty motor).  For a quick fix I 'bowed' one filter in each side, breaking the airflow seal to allow more airflow and reduce stress on the motors.  This helped but, of course, breaking the airflow seal kind of defeats the purpose of drawing air THROUGH wet filters for humidification.  I do like the construction of the product - maybe they work out better in other manufacturers units.  For me it's back to the OEM filters.