Don't waste money and energy heating or cooling an empty room! Use motorized dampers to take control of your HVAC (Heating, Ventilation and Air Conditioning) system!
These sturdy and reliable dampers from RCS (Residential Control Systems) operate on 24VAC, and are designed for thousands of operations. And they have been specially designed with with extra stiffening beads to keepp themm round, even with the toughest installations.
Available in normally open and normally closed versions, you can customize your HVAC system for exactly what you need. On a normally closed damper, you apply 24VAC to open the damper. When power is removed, a spring closed the damper. On a normally open damper, the process is reversed.
Dampers are available in 6", 8", 10", 12", 14", and 16" sizes, in normally open (NO) and normally closed (NC) versions.