VENTILATION SYSTEMS Ventilation hatches serve to supply a proper amount of fresh air in closed areas. The hatches can be run by mechanical or electrical mechanisms. In a case that an electrical mechanism is used there is a possibility to install additional systems, which can react automatically to the actual weather conditions such as: rain, wind, temperature then the mechanisms command the hatch operation by opening or closing hatches and clear evacuation routes from smog and other gases associated with a fire.

Driving and controlling mechanisms Pneumatic and electric servomotors, gas springs. Activating of hatches can be automatic or manual. Most often used in :production halls, warehouses, sport arenas, commercial halls and staircases.

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