HVAC systems are equipped with components to regulate and control the airflow. Dampers can be used for regulating the airflow only or they can have a key role for the safety of people in technical rooms or in buildings placed where dangerous agents like H2S are present. In this case, dampers must meet air tightness so that any quantities of gas or dangerous agents are not lethal to people. Europair satisfies every requirement to meet all project specifications.