Product review (5 stars): Just as good as genuine Aprilaire panels
A high quality replacement filter for our Aprilaire 400 series whole home humidifier. These filters fit the same as the genuine Aprilaire filters do, and they last just as long. Our major issue is hard water build up which requires 3-4 water panels per season. I haven't had a single one of these panels grow mold, so that is a big plus.