fire damper (suomeksi)

Määritelmät:

a passive fire protection product used in heating, ventilation, and air conditioning ducts
a damper which closes off an air duct automatically in the event of fire so as to restrict the passage of fire and smoke
(lb, en, historical, archaic, mining) a mine worker who detects and clears a mineshaft of firedamp by intentionally burning or blowing it up