The AprilAire 4223 Drain Spud is the plastic fitting that attaches to the base of the housing of your humidifier. It is designed to connect to a 1/2" I.D. drain hose.
The AprilAire 4223 Drain Spud is the plastic fitting that attaches to the base of the housing of your humidifier. It is designed to connect to a 1/2" I.D. drain hose.