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A Damper consists of a plate that stops or regulates the flow of air inside a Duct, Chimney, VAV Box, Air Handler or other air handling equipment. A Damper may be used to cut-off airflow to an unused room or to regulate conditioned air for room-to-room temperature and climate control.
Dampers are operated manually or automatic (motor driven). Manual Air Balance Dampers are opened or closed by a Handle outside the duct. Automatic Motorized Dampers are used to constantly regulate airflow and are operated by electric or pneumatic (Air Pressure) motors - each controlled by a thermostat or building automation system. Dampers may also be used to help control the rate of combustion in fuel burning equipment.