Product review (4 stars): Works for intended purpose
This filter works in my Honeywell humidifier, although I used to be able to find the one with the bacteria shield.  The last two I ordered through Amazon (this year and last) have been the plain white ones.  They still work for what we need, which is to run the humidifier during the dry winter.  Each time I fill the tanks, I rinse the filter and flip it over, and that seems to prolong the use a little.  All in all, one filter lasts me the winter as we don't run every day.