Product review (3 stars): Double check your humidifier filter replacement number
These were listed as a replacement filter for the Sunbeam (Jarden) SCM2412-UM humidifier, both on the Amazon site and elsewhere. This is incorrect.

They are too tall to fit correctly, BUT they can be trimmed to do so, as the width and depth is of the right dimensions to fit in the filter holder. Indeed, the box in which the filters are packaged lists the humidifiers for which these filters would be a replacement and the SCM2412 is not among them.

Prudence (she is such a dear!) dictates double checking with the manufacturer to make sure these are the right ones for your humidifier. Even so, they can be made to work.