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

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

Internal circuit breakers will trip, and the air outlets will automatically close to prevent the spread of fire. Typically installed on the walls of stairwell vestibules and smoke shafts, they can also

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