A backdraft damper will allow the stream in one path and would not alter the path or reduce the movement. In the meantime, the balancing damper utilizes rotating shutters to control airflow and speed. Leave a Reply Nonetheless, one downside of choosing this sort of damper in HVAC is that https://aircontroldampersforengin78899.blogdal.com/37210574/the-definitive-guide-to-air-control-dampers-for-hot-climates