Greenheck’s EM-30 backdraft damper series is AMCA Licensed for Air Leakage and Air Performance. Designed to open by air pressure differential and close by gravity, backdraft dampers can be used as exhaust or intake dampers.
The EM-30 is a vertical-mount horizontal airflow backdraft damper for pressures up to 10 in. wg and velocities up to 3500 fpm. Greenheck EM-30 series backdraft dampers comply with the energy code requirements in ASHRAE Standard 90.1 and the International Energy Conservation Code (IECC).
