The Lennox 10C16 iHarmony Zoning Damper Control Module is an electronic control component designed to manage airflow in compatible Lennox HVAC zoning systems. It receives signals from thermostats and coordinates motorized dampers to regulate conditioned air distribution across different zones. Used with compatible Lennox furnaces, air conditioners, and heat pumps, this module supports... https://www.partshnc.com/10c16-lennox-iharmony-zoning-damp-control-mod