4403 scale control insert - for aprilaire model 400

4403 scale control insert - for aprilaire model 400

• This 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 with the Aprilaire water panel number 45, and the distribution tray number 4407. Also see the maintenance kit part number 4788.