Product review (1 stars): Horrible product!
I will not buy this again!  Immediately after I starting to use it, it began to flake apart.  The black outer layer began to peel away from the white part and then it began flaking into tiny black pieces that made a mess in the water reservoir of the humidifier.  I finally just peeled the remaining black part off and now the white inner filter is starting to do the same thing.  I haven't had this filter in the machine for even 10 days yet.  Horrible product!