A backdraft damper will allow the movement in one path and won't change the way or decrease the movement. In the meantime, the balancing damper takes advantage of rotating shutters to control airflow and speed. Leave a Reply Inlet vane dampers are dampers used in appliances that demand enthusiast shut-off. https://air-control-dampers-for-h45667.theobloggers.com/42967001/the-smart-trick-of-air-control-dampers-for-hot-climates-that-nobody-is-discussing