Since 1988, Suncourt has manufactured products that provide better air quality and control. As a family owned manufacturing business located in Durant, Iowa, our engineered products improve indoor air quality and comfort in a smart, efficient, energy saving way. Our R&D team places a large focus on innovation and is continually looking to improve existing products as well as develop new ones. Suncourt products are listed by Underwriters Laboratories Inc. UL and/or ITS Intertek Inc. ETL Semko for your safety and protection. Enjoy having complete control of which rooms your HVAC system heats or cools with the Suncourt ZoneMaster Motorized Damper. This inline damper can be configured to open and close partially or completely depending on your application and preference. With the duct damper, you can reduce your heating or cooling expenses by cutting off airflow to unoccupied rooms via a switch, timer or when a pre-specified temperature is reached. Take control of the climate in your space with Suncourt.