Positive pressure supply air outlets are used to increase air pressure and supply air during a fire. Through these outlets, a continuous supply of air is delivered to the antechamber, maintaining a positive pressure.

Pressure is applied to ensure that smoke does not spread in this area, providing space for escape. When the temperature exceeds 280°C, there is no possibility of escape.

Internal fuse will trip, causing the air outlet to automatically close, preventing the spread of fire. Typically installed on the walls of stairwell vestibules and smoke shafts, also can

Installed on the side of the smoke control system pipe or at the end of the duct.