Model EMV-11 horizontal mount, backdraft damper allows vertical airflow up and prevents reverse airflow down. The damper is opened by air pressure differential and closed by gravity. Standard models include adjustable counterbalance weights to assist with opening.

• Aluminum construction
• Pressure: Up to 10 in. wg
• Velocity: Up to 3500 fpm
• Temperature: Up to 180°F
• Accessory for Vektor units