Get aluminum dampers for HVAC (Heating, Ventilation, and Air Conditioning) systems to control the air flow or smoke within ductwork. This mechanical device is composed of an adjustable blade to either allow or restrict the air to pass through the duct. The lightweight, durability and corrosion resistant property make aluminum a preferred material for the construction of dampers. In an event of fire, aluminum dampers play an important role in preventing fire or smoke from spreading within a building. Installed in ventilation ducts, these dampers automatically close upon the triggering of a fire alarm. As it is responsible for containing smoke and fire for some time, it enables building occupants to evacuate the facility safely.