A backdraft damper allows the movement in one path and isn't going to alter the route or lessen the movement. In the meantime, the balancing damper uses rotating shutters to control airflow and speed. Leave a Reply While numerous damper varieties exist, all of them serve the identical premise – https://aircontroldampersforhotcl34455.dailyblogzz.com/37075355/a-secret-weapon-for-air-control-dampers-for-engine-sheds