A backdraft damper will allow the circulation in a single path and does not alter the direction or reduce the flow. In the meantime, the balancing damper uses rotating shutters to control airflow and speed. Leave a Reply Multi-blade air flow dampers present exact, variable control of airflow by way https://air-control-dampers-for-h68902.nizarblog.com/36812660/helping-the-others-realize-the-advantages-of-air-control-dampers-for-engine-sheds