SSNM-30 Series

The SSNM-30 series are vertically mounted stainless steel backdraft dampers designed to allow horizontal airflow and prevent reverse airflow. Model SSNM-30 has no flange, model SSNM-30 has no flange, model SSNM-31 has a flange on the discharge side, and model SSNM-32 has a flange on the intake side. All dampers in this series open by air pressure differential and close by gravity.

  • 304 stainless steel
  • Pressure: Up to 2 in. wg
  • Velocity: Up to 2500 fpm
  • Temperature: Up to 180°F