![Mnet 195614 Greenheck Ssnm 10 Damper](https://img.impomag.com/files/base/indm/all/image/2018/08/mnet_195614_greenheck_ssnm_10_damper.png?auto=format%2Ccompress&q=70&w=400)
Greenheck has added two new models of stainless steel backdraft dampers to its backdraft damper line. The SSNM-10 Series is a horizontally-mounted backdraft damper designed to allow vertical airflow up and prevent reverse airflow.
Opened by air pressure differential and closed by gravity, both the SSNM-10 and SSNM-30 Series dampers are rated for pressure differential up to 2 in. wg. and velocities up to 2,500 fpm. Three types of frame construction are available: no flange, flange on discharge and flange on intake.
![Mnet 195613 Greenheck Ssnm 30 Damper](https://img.impomag.com/files/base/indm/all/image/2018/08/mnet_195613_greenheck_ssnm_30_damper.png?auto=format%2Ccompress&fit=max&q=70&w=400)