The Aprilaire 4407 is the correct replacement for the following humidifiers:
The Aprilaire 4407 Humidifier Water Distribution Tray is crucial for proper humidification. This water distribution tray incorporates a pumice coating inside the pad frame to distribute the water evenly to all parts of the evaporative panel. The pumice coating will erode away and lose its effectiveness as water flows over the distribution tray. Also known as part number 4407, the Aprilaire Water Distribution Tray ensures maximum evaporation from your humidifier. This tray catches the incoming water and evenly divides it up so that it will saturate the entire humidifier filter.
Aprilaire 4407 Water Distribution Tray specifications:
The Aprilaire Humidifier Water Distribution Tray fits at the top of the water panel (humidifier filter) and attaches to the U-shaped scale control insert. The Aprilaire brand is also identified by the following spelling variations: April Aire, April Air or Aprilair. Based on water quality and usage, replace your Aprilaire 4407 Water Tray annually, for optimum performance. This scale insert is crucial for proper humidification, so be sure to replace your humidifier water panel at the same time you are replacing your distribution tray.