Product review (5 stars): Love, Love, Love this filter.
I would have spent a fortune on filters this winter had I not found this one.  I wrote quite a lengthy article about this filter if you want to read it.  Just go to Honeywell Germ Free Cool Mist Humidifier, HCM 350. If you are remotely thinking of buying this filter, please read what I wrote.  You will see the word filter in the headline.

Irene