Product review (5 stars): Great filter at a great price
My humidifier has the wf2 pushed flat, not round like it is in the pic.  So when I received them that way, I was happy. Each was individually plastic wrapped, which kept it pristine during storage.  I also like the wire mesh on the outside, to help the filter hold it's structure.  You do need to be careful with that, though.  Plus, I have not found a better price.  Living in the desert, I use the humidifier every day.