GeneralAire GF-97 Humidifier Evaporator Pad for Autoflo 97. 9" W x 7-1/2" ID x 8-1/2" OD.
Water panel evaporators are the heart of your humidifier and the component which generates the important humidity to keep you comfortable during the heating season.
Also referred to as a Humidifier Pad, Water Panel, Media Filter or Evaporator Pad.