Aprilaire®, 4040, Solenoid Valve, Replacement, For Use With: Models 800, 330, 445, 110, 112, 350 and 360 Commercial and Residential Aprilaire Humidifier, Specifications: 24 V, 60 Hz, Metal/Brass, Silver/Gold/Yellow, 1-7/8 in H x 1-5/8 in W x 2-5/8 in D Dimensions