Product review (2 stars): Mine too...no glue
Just like a previous review, I tried to take these filters out of the box, and each one of the 4 fell apart because the glue putting the multiple filter papers together didn't hold. So I had to take each row out of the box and piece the filters together in my humidifier. The problem then came that the pieced filters didn't all fit the same, not being the same size anymore. Had I had the time and not been stuck at home in the snow, needing to humidify my home, I would have sent these filters back