Aprilaire - The small to medium bypass humidifier is a whole-home solution that helps you achieve total comfort though humidity control. The Model 500 is installed in the HVAC ductwork. Features

• Delivers optimal levels of humidity control with manual humidifier control
• Provides vital service, temperature and relative humidity indicators
• Humidifies tightly constructed homes up to 3,000 sq. ft. in size
• Performs quietly with simple annual maintenance
• Comes equipped with a drain to flush minerals from the unit
• Incorporates easy right or left discharge change-over
• Has an evaporation capacity of 0.50 gph

Note: Model 500M - does NOT include installation kit