Aprilaire suggests changing the in-line strainer and the orifice when the pad is changed to prevent problems. This plastic orifice regulates the amount of water the humidifier uses.
Replaces Part: 4021
Fits Models: 112, 120, 220
Aprilaire suggests changing the in-line strainer and the orifice when the pad is changed to prevent problems. This plastic orifice regulates the amount of water the humidifier uses.
Replaces Part: 4021
Fits Models: 112, 120, 220
