Positive pressure supply air outlets are used to increase air pressure and supply air during a fire, continuously feeding air into the antechamber through these outlets, maintaining a positive pressure in the antechamber.

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

Internal circuit breakers 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 smoke control system piping or at the end of ducts.