Product review (2 stars): Not very good quality.
Filters were falling apart. Not made very good. Tried to get a hold of Essick on their 800#. Waited for 20 minutes on hold. Never could get a person or machine to talk to. Their website says to call them first if you are unhappy, but would sure be nice to talk to some one.  This is not the first time I have purchased this product, just the first from Amazon. The company website says the filters are guaranteed, but that does no good if you can't talk to them. Also sent an e-mail and have had no reply. Will only purchase these filters again cause they are the only ones that fit my humidifier. Hope it breaks soon so I can buy a new different brand.