Product review (5 stars): Look,fit and work just like the more expensive version of humidifier filter
I tried these on a whim and they work just as good as the more expensive filters I have purchased at my local big box Hardware Store. Was skeptical that since they were so inexpensive that maybe they didn't work as well, were really thin or worse.  Nope, they look exactly like the more expensive ones and fit my humidifier perfectly.  Thank you!