Positive pressure supply air outlets are used to increase air pressure during a fire. They continuously supply air to the antechamber through these outlets, maintaining positive pressure in the area to prevent smoke from spreading and providing an escape route for people.
At temperatures above 280°C, there is no possibility of escape for individuals. The internal fuse will melt, and the air outlet will automatically close to prevent the spread of fire. Typically installed on the walls of stairwell vestibules and smoke shafts, it can also be mounted on the sides of smoke system pipes or at the end of ducts.