Compatible with Aprilaire 400, 400A, and 400M models for versatile replacement
High-capacity water panel supports efficient humidity control in large spaces
Easy installation for quick maintenance and minimal downtime
Pack of two panels ensures twice-yearly replacement cycle for optimal performance
Summarized by Shop
Aprilaire 400 Humidifier Water Panel - Aprilaire#45 (2-Pack) The model 400 water panel should be replace twice per dry/heating season due to the high-capacity, water-conserving nature of this model. This water panel fits models 400, 400A, 400M.
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