This product was horrible. I purchased two to get us through the next few months and neither filter lasted longer than a week. The issue is that it looks like they are put together with some type of glue gun or something. The glue melted into the humidifier basin so there was a white film in it. Then the filter itself formed a goopy barrier (again the glue) where it hit the water in the humidifier which blocked the filter from working at all anymore.Just horrible.