GENUINE OEM Replacement Aprilaire Water distribution tray (only) Fits
For use with Aprilaire models 440, 445, 445A &amp;amp;amp;amp; 448. These are the water distribution trays which distribute water evenly to all portions of the evaporative panel. They attach to the u-shaped scale control insert and incorporate a pumice coating inside of them to distribute the water evenly to all portions of the tray. This even-water distribution ensures maximum evaporation from your humidifier.