UHS99 24V Universal Humidifier solenoid 1/4x1/4 Replaces Aprilaire 4040
ESP UHS99 24V Universal Humidifier solenoid 1/4x1/4 Replaces Aprilaire 4040
This is the #1humidifier solenoid replacement on the market.Directly replaces the Aprilaire 4040,and l00's of other units with a fitting changeout.