Review on 🌬️ Aprilaire 35 Replacement Water Panel for Whole House Humidifier Models 350, 360, 560, 560A, 568, 600, 600A, 600M, 700, 700A, 700M, 760, 760A, 768 - Pack of 10: Efficient and Convenient Humidifier Maintenance by Paul Koehler

It's nice to have spare plates when you need them. I have found that mold will start to grow on the panels if left too long. Attempts have also been made to wash these panels, but mineral deposits make them difficult to clean. The plate is made of light metal, which allows water to drain well and ensures good humidity (their purpose). This is definitely a disposable product, so buying this pack of 10 makes life easier when a replacement is needed. In addition, the cost reduction makes these panels more affordable.