Centrifugal air mover by Phoenix. Most airflow using the fewest amps of any centrifugal. 3 Speed - 1/3HP motor. Maximum velocities over 3000 FPM. Best balanced exhaust airflow. Directional Airflow. Stackable. 3.9 Amps High Speed. 2.6 Amps Low Speed. 115V/60Hz. 29.5 Lbs.