This Aprilaire 500 Series Humidifier Maintenance Kit is used in the Aprilaire 500, Aprilaire 500A, Aprilaire 500M Humidifier, and other compatible Aprilaire 500 Series humidifier models. It includes replacement parts for Aprilaire 500 humidifiers.
This Aprilaire 4792 Maintenance Kit is used to keep your Aprilaire 500 Series humidifier operating in top condition.