Greenheck Fan - OFSD-311

Below are all the different types of Greenheck Fan. Select the device of your choice, to download the manual

Contents

Model OFSD 311 3 GREENHECK Out of Wall Combination Fire Smoke Dampers Steel Airfoil Blades Application Model OFSD 311 is an out of the wall high performance combination fire smoke damper with class I leakage OFSD 311 is approved for use in walls partitions and floors with fire resistance ratings less than 3 hours Removal of wall grille allows access to actuator and other components High strength airfoil blades insure the lowest resistance to airflow in HVAC systems with velocities to 3000 fpm 15 2 m s and pressures to 4 in wg 1 kPa Model OFSD 311 shall be installed vertically with blades running horizontal or horizontally and is rated for airflow and leakage in either direction Ratings UL555 Fire Resistance Rating Fire Rating Dyna ...