Product review (5 stars): No more frustration!
My Holmes humidifier uses 3 of these lovely filters... Holmes sells them in sets of two. That caused me some frustration, but now Ive found these and Im happy. Incidentally, I thought Holmes might like to learn of this miracle of filter packaging, so I wrote them a letter explaining how this was so much better than their filter replacement packs... I also included the left over filter #4 as I won't be needing it.

Buy these filters. Not those (Holmes)