Furnace Humidifier, Steam, Max. Square Foot Capacity 1,400, Voltage 120V AC, 12.5 A Amps AC, Height 7 5/8 in, Width 12 5/8 in, Depth 12 1/2 in, Mounts Directly on Plenum, Plenum Opening Required 10-1/2 in H x 8 in W, Drain Type Auto Flush, Color Silver