A backdraft damper permits the movement in a single course and will not change the course or decrease the stream. Meanwhile, the balancing damper uses rotating shutters to control airflow and velocity. Leave a Reply Manual dampers, Conversely, are modified by hand. This lets you customize the airflow inside your https://air-control-dampers-for-h78901.win-blog.com/17223918/everything-about-air-control-dampers-for-engine-sheds