Genuine replacement Aprilaire inline strainer # 4004 can be conveniently delivered to your door.
This strainer is a black plastic piece that is inserted in the inlet side of the solenoid valve, and is designed to prevent debris from entering the solenoid valve.
Aprilaire: 110, 112, 220, 224, 350, 360, 400, 440, 445, 445A, 448, 550, 550A, 558, 560, 560A, 568, 600, 700, 760, 760A and 768
Recommended Replacement: Should be cleaned periodically and changed as needed.
Other Stock Numbers: UAPRILAIRE4004O