Product review (1 stars): Doesn't do the job - buy the brand name
Although it fit my humidifier, this filter didn't work. It soaked up water, but the humidifier couldn't distribute it. After several days of it not working, I took out the (already discolored) Protec filter and put a Honeywell brand filter in and it worked perfectly the first time. So disappointed that I bought a 2-pack of these duds.