Product review (2 stars): They work, but not as well as Honeywell filters
These are not a good alternative to the real Honeywell filters.  I always run my humidifier on high so I have a pretty good idea of how much water is used each night.  These filters use approximately 10-20% less water and do not hold their shape well.  As soon as you get them wet they tend to deform and collapse.  I'll give them two stars because they fit the machine and do work, I'm just not sure why so many people think these are better than the real thing.  They perform worse and don't hold their shape at all.