Greenheck Fan - EM-30 Series

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Contents

Z3 GREENHECK Extruded BACKDRAFT DAMPER EM 30 SERIES Vertical Mount Horizontal Airflow Application and Design The EM 30 series is a vertical mounted backdraft damper that is designed to allow horizontal airflow and prevent reverse airflow The damper is opened by air pressure differential and closed by gravity Ratings See page 2 for specific limitations Pressure 4 0 10 0 in wg 996 Pa 2491 Pa differential pressure Velocity 2500 to 3500 fpm 13 m s 18 m s Temperature 180 F 82 C Standard Construction Frame Heavy gauge 6063T5 extruded aluminum 0 125 in 3 2mm thickness Blades Heavy gauge 6063T5 extruded aluminum 0 070 in 1 8mm thickness Axles in 19mm dia metallic Bearings Synthetic acetal sleeve type ...