Aprilaire 4331 600 Series Humidifier Water Distribution Tray
About The Aprilaire 4331 Humidifier Water Distribution Tray For Aprilaire 600 Series HumidifiersThe Aprilaire 4331 Humidifier Water Distribution Tray is a replacement part for Aprilaire humidifier models 600A and 600M. The Aprilaire 4331 Humidifier Water Distribution Tray evenly distributes water across the entire evaporate panel by attaching to the Ushaped scale control insert and incorporating a pumice coating inside.