Product review (4 stars): Good basic filters at a great price.
For less than half the price of the local stores, these filters work great.  Fit my old Kenmore console humidifier perfectly.  No trimming required.  I easily get a full season of use out of one set (using humidifier bacteriostat in the water to inhibit mold).  The humidifier output appears to be the same as when I used to get the expensive Sears version.  Will definitely get another box for next season.