fire vent

smoke and fire vent

A vent cover, installed on a roof, which opens automatically when the heat exceeds 160°F (71.4°C), thereby releasing the door and venting the fire.
References in periodicals archive ?
cleaning of existing duct mounted reheat coils, install circuit setters for reheat coils, cleaning and rebalancing existing AHU-1 and AHU-2 air distribution system, water balancing for existing hydronic system, replacement of roof fire vent windows and all architectural, fire alarm, and electrical work required for the above mentioned work.
The Bilco Company's Lumivent is a domed automatic fire vent that provides natural daylight, energy efficiency, and the protection of automatic fire venting.
A member of staff, who asked not to be named, said: "The debating chamber was so hot on Thursday they had to open the fire vents to try to get air in.