This is an Aprilaire 4330 Humidifier Scale Control Insert replacement for use in conjunction with the Aprilaire Water Panel Evaporator and the Aprilaire Water Distribution Tray in the following Aprilaire humidifiers: Aprilaire 600 Humidifiers, Aprilaire 600A Humidifiers, and Aprilaire 600M Humidifiers.
The Aprilaire 4330 is a plastic U-shaped humidifier replacement component which encases the Aprilaire Water Panel Evaporator. It is made to redirect any harmful mineral build up back into the evaporator panel and to prevent water from leaving the evaporator section and entering another portion of the humidifier.
This is a genuine factory replacement Aprilaire 4330 humidifier scale control insert also known as the Aprilaire 4330 scale control insert and April Air 4330 scale control insert. The Aprilaire 4330 scale control component should be replaced as needed in your Aprilaire humidifier.