4330 scale control insert - for aprilaire models for aprilaire model 600, 600a, 600m

4330 scale control insert - for aprilaire models for aprilaire model 600, 600a, 600m

• These are the u-shaped component which encases the Water Panel Evaporator. Used with Aprilaire model # 35 water panel and 4331 water distribution tray for models 600, 600A, 600M.