Genuine Aprilaire OEM replacement water panel evaporator (or humidifier pad) #12 for models 112, 136, 224, 440, 445 and 445A and Chippewa Models 224 and 225.
- We generally recommend replacing this evaporator panel once a year. You may need to replace the panel more frequently if you have hard water.
- The water panel slides into the scale control insert and the water distribution tray sits across the top of the panel.
- The dimensions of the water panel 11 1/2" x 14 3/4" x 1 3/4"