Ventilation and Air Conditioning systems, the air ducts and fire dampers used in the prevention of the spread of fire and smoke; automatically çalışır.hav the channels as mounted concrete and brick wall switch in the kullanılabilir.isteg depending on the indicator switch with the addition of ventilation fan stopping Amasa yapılır.72 ° C melting import insurance (flow switch) through the wing itself off and the spread of fire to adjacent neighborhoods the fire by closing the air circulation prevents fueled önler.ayn time.