Drain Spud 4223 Aprilaire Canada

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" O.D. drain hose.

Used in the Model 600, 600A, 600M, 500, 500A, 500M, 558, 550A, 550, 568, 560A,