Continental Fan’s dampers are ideal for industrial applications that require air balancing on a regular basis. Air balancing in HVAC systems is an important consideration. If proper balancing does not exist in buildings, inconsistent temperatures and poor air quality may result. IRIS dampers can be used to easily adjust airflow to different regions in a building, providing overall better air quality and resulting in improved comfort levels, increased energy efficiency, reduced maintenance costs, and a longer lifespan for HVAC equipment. BDD Backdraft dampers are of premium quality and economically priced.