Product review (5 stars): Fits several models well.
Great price, i Got two so i can throw the old one out after winter is over, in case of bacterial growth/ mold.  Make sure everything is good and clean so you don't get health issues.  Be careful.  I guess I'm updating 3/31/16. I had the filter installed for a while, then it got bacterial growth spots.  I did get a very mild upper respiratory infection for about two days before I realized my mistake.  I went to box store and bought bacteriostat immediately, you really need some product like it.  I don't care about hard water because I got two filters. Glad the two pack saved my humidity for the winter as I easily removed the one and installed another, but with chemical bacteriostat keeping the water treated and safe.