Product review (1 stars): Honeywell HAC 504 filters......Poor quality
This filter falls apart very quickly.  Not as good as the original filter.  I have to buy one every two weeks. Quite an expense.  I would never buy this type of Honeywell cool mist humidifier again.  Go for one that does not need a filter.  I spoke with Honeywell P.R. and they said they never have any complaints.  Perhaps they need to read these posts.