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Fire Dampers | Greenheck Fire dampers are UL 555 classified with a fire resistance rating of 1½ or 3 hours Fire dampers fall into two categories: UL 555 classified dampers for use in HVAC systems that remain operational during a fire The dampers have a fire-resistance rating of 1½ hours
Fire Smoke Dampers - Grainger Industrial Supply They use a fusible link that melts above a specific temperature, releasing a spring-loaded damper or blade that blocks smoke and fire from moving through the duct
Duct Fire Dampers - McMaster-Carr In case of a fire, these dampers shut automatically to stop airflow They have a fusible link that melts at 165° F, releasing a spring to close the blade Dampers meet UL 555 fire safety standards to help prevent the spread of fire for 1 1 2 hours They are undersized to fit inside duct
Ruskin gt; Catalog gt; Category Fire dampers are UL555 tested and labeled devices installed in ducts and air transfer openings or air distribution systems, designed to close upon the detection of heat
Understanding Fire Dampers: Types and How They Work A fire damper is designed to prevent the spread of flames and smoke through HVAC ductwork during a fire It automatically closes when triggered by high temperatures, helping to contain the fire and protect building occupants
Fire Damper Installation, Configuration and Joint Method Whenever a duct penetrates through a wall, the penetration point which we call duct opening or wall opening, must have a fire damper In case of a fire outbreak, the fire damper will close to prevent the fire from spreading to the adjacent room
HVAC Fire Dampers - Aire Technologies Aire Technologies HVAC fire dampers are engineered and tested to prevent the spread of fire inside the ductwork through fire-resistance-rated walls Our fire dampers are available for both static and dynamic systems and are offered in multiple configurations to suit almost any specification
Fire dampers for ductwork - Rf-Technologies Fire dampers prevent the spread of fire inside the ductwork that crosses fire-resistance rated walls and floors They are installed in or on the construction element in order to restore its fire-resistance rating The fire damper blade is open when the ventilation system is working