What is Fire and Smoke Damper?

Fire damper 

Fire damper is a device installed in ducts and air transfer opening of an air distribution or smoke control system designed to close automatically upon detection of heat. Its primary function is to prevent the passage of flame from one side of a fire-rated separation to the other.

Smoke damper 

Smoke damper is a device installed in ducts and air transfer opening of an air distribution or smoke control system designed resist the passage of air and smoke. The device operates automatically and is controlled by a smoke detection system. Their primary function is to prevent the passage of smoke through the heating, ventilation, and air conditioning system, or from one side of a fire-rated separation to the other.

Fire & smoke damper

Combination of fire and smoke damper dampers meet the requirements of both fire dampers and smoke dampers. They are used in HVAC penetrations where a wall, floor, or ceiling is required to have both a fire damper and smoke damper.

They are used in HVAC ducts where a wall, floor, or ceiling is required to have both a fire damper and smoke damper. They close upon the detection of heat or smoke.