Product review (4 stars): Glad it fits
You have to wet it and then squeeze it a little in order for it to fit the humidifier (depending on which one you have), but it works well. We needed filter replacements desperately, so this purchase was great.
Please note: There is only one filter per box, but the purchase is for a pack of two, so you'll get a total of two filters. I noticed there has been confusion regarding how many should come in a box. The number two printed on each box is for something else, not quantity. Hope this helps someone.