Product review (5 stars): "humidity needs filters"
I need these filters every winter. I have 2 vornado humidifiers, in the winter ,you can never have enough moisture in your home. These filters are difficult for me to find around our home. They fit my evap 2 perfectly . They come in a 2 pack, both packed in  plastic packaging then in a vornado brand box , so you know the filters are genuine. If for any reason these arrive with an unpleasant odor, simply mist both sides of the filters with fabric freshener, then run under cool water until completely soaked .let drip out a little ,place in humidifier ,smells gone. I do this often, this does not harm the filter at all. THANKS FOR READING, BYE 
UPDATE; I have bern ordereing this brand for quite a long time now. I always receive the Vornado evap replacement filters.  They always come in a vornado box completely sealed. I also add two capfuls of antimicrobial water treatment for each filter used in our humidifiers.  They usually last at least 5 to 6 weeks, give or take depending on how cold it is & what temperature setting we keep in the house, as well as the setting on the humidifier.
We usually leave it on low & running continuous.
I haven't yet been disappointed with any orders I've received.
Thanks again , bye.