Application: the 4040 solenoid valve is compatible with majority Aprilaire humidifiers except for commercial units and residential models 800, 330, 445, 110, 112, 350 and 360
Function: the humidifier solenoid valve can control how much moisture enters into your humidifier to make it possible to maintain proper humidity levels throughout your home
Easy to apply: the installation of the solenoid valve is very easy, just using a screwdriver and wrench can accomplish and it only takes few minutes to install it
Durable material: the humidifier is made of durable brass material and copper wires, which can serve for long time usage, you can apply it for a long period