4040 Solenoid Valve, 24 Volt for Whole House Humidifier Models 400, 400M, 500,

4040 Solenoid Valve, 24 Volt for Whole House Humidifier Models 400, 400M, 500, 500M, 600, 600M, 558, 550A, 550, 568, 560A, 560, 700, 700M, 768, 760A, 760, 0.5 Ounces. Compatible with AprilAire Whole House Humidifier Model: 400, 400M, 500, 500M, 600, 600M, 558, 550A, 550, 568, 560A, 560, 700, 700M, 768, 760A, 760.

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