Aprilaire Humidifier Scale Control Insert, Series 400
$45.47
Aprilaire 4403 Humidifier Scale Control Insert.
Use with 400, 400A and 400M Humidifiers.
The Control Insert 4403 is the U-shaped component which encases the Water Panel. It directs any built-up mineral deposits back into the water panel, and it prevents water from leaving the wet-pack section and entering another portion of the humidifier
- Used in Models
This product is not used in any models.