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The Aprilaire 4081 is the correct replacement for the following humidifiers:
The Aprilaire 4081 Humidifier Water Distribution Tray ensures maximum evaporation from your humidifier. Also known as part number 4081, this distribution tray attaches to the U-shaped scale control insert. It incorporates a pumice coating inside the pad frame to distribute the water evenly to all parts of the evaporative panel. As water flows over the distribution tray the pumice coating will erode away and lose its effectiveness. The Aprilaire brand is also identified by the following spelling variations: April Air. April Aire or Aprilair.
Aprilaire Humidifier Water Distribution Tray 4081 specifications:
The Aprilaire 4081 scale insert is crucial for proper humidification. For optimum performance, based on water quality and usage, replace your Aprilaire 4081 Humidifier Water Tray annually. Be sure to replace your humidifier water panel at the same time you are replacing your distribution tray.