Product review (1 stars): metal
I bought three of these for my honeywell humidifier, thinking they were pretty similar to ones I've previously purchased.
Unfortunately, they are NOT.
The outer edge is metal, and it's pretty sharp. Not so great when I'm trying to clean and change it out in a hurry (I have a 16 month old who always wants to help)
I went through two of these in less than a month, they molded SO quickly.  (I keep my humidifier VERY clean, so I know it wasn't a water/humidifier problem)
Overall completely dissatisfied.  I will read more carefully next time.