Positive pressure supply air outlets are used to boost air pressure during a fire, continuously supplying air to the antechamber through these outlets, maintaining a positive pressure in the antechamber.

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

Internal fuse will blow, and the air outlet will automatically close to prevent the spread of fire. Typically used for installation 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 ductwork.