These are mounted inside the HVAC ductwork and they are brought on to close whenever they feeling smoke. Smoke dampers tend to be product of aluminum and possess a motorized actuator that closes the damper. Whilst technological know-how will get better, HVAC dampers are essential for a terrific indoor Area. https://aircontroldampersforengin12344.techionblog.com/36685729/the-smart-trick-of-air-control-dampers-for-engine-sheds-that-no-one-is-discussing