Product review (5 stars): Just As Good As Expensive Brands
I was a little hesitate to buy this filter since some reviewers said it was taller than others, but I had no problem. When I first installed the filter for the first time, it did keep the top of my humidifier from closing, but after the first use, and rinsing the flipped filter side with filtered water with each water change, which I always do, the filter fit my humidifier perfectly. No problem at all. Now I want to see if the filter lasts for 2-3 months as my other ones did. So far 1 month and counting.