Product review (5 stars): all good, normal
I ordered the 6 pack and am using the first one now for about a week. You know they say you should soak them in cold water before placing in the humidifier which I do. And you should rotate the filters regularly, which I do twice a day. So after I soaked the first one, all good, normal. The next morning when I went to rotate it I noticed that it had really soaked from being in the humidifier. It actually gained in size and thickness. I am guessing these will last much longer than the Honeywell filters you can get. These are much thicker, have the dust guard and have a light metal web in the center of the walls to make sure they stand up well. I will be getting these again for next season, this 6 pack will last me a while.