AprilAire 10 Water Panel Humidifier Filter Replacement for AprilAire Whole-House Humidifier Models 110, 220, 500, 500A, 500M, 550, 550A, 558 (Pack of 1)

This genuine Aprilaire replacement water panel is the backbone of your Aprilaire humidifier. The heavy-duty aluminum mesh frame holds its shape over the life of the water panel as the porous ceramic-type coating absorbs water and maintains the proper level of hydration to support the evaporation process. Water is vaporized as air warmed by the furnace passes over the water panel. The humidified air is carried through the house through the air ducts.