Dampers appear in different sizes and styles, but all of them contain the exact same essential parts. They include a frame that is put in within the ductwork, with blades or vanes that can be altered to control the airflow. Watch out for uneven heating or cooling, strange noises from https://air-control-dampers-for-h12233.blogspothub.com/35744813/about-air-control-dampers-for-engine-sheds