Product review (4 stars): I purchased two filters for my Holmes humidifier and found ...
I purchased two filters for my Holmes humidifier and found that they are to tall for the unit. The part of the unit that holds the filter sits over the filter but is not snuggly seated on the humidifier base. I am making due with it for now but it probably could be at least 1/4 - 1/2 " shorter.