Product review (2 stars): Not so great
While these fit older model humidifiers, they don't work nearly as well as the original filter--which are no longer made. I've used many varieties of filters that say they are the same as the originals. They're not. The originals were more like cloth and could be washed out a few times, then used again. They also didn't collect yucky stuff as quickly as the newer ones.  The newer ones don't last as long, are cheaply made, and are a lot more expensive.

While this one works and meets needs, it's vastly inferior to the original product, and is pretty much a moneky sink, as it will need to be replaced monthly.