18" F5 Industrial Floor FanWith high quality construction and three speed control, the 18" F5 Industrial Floor Fan provides optimal air circulation for your entire grow room. The blowing angle is adjustable (angle of elevation can be vertical). Characterized by such advantages as powerful wind flow, smooth angel adjustments, low noise, low heat, electricity saving, low center of gravity, easy to move, and a sturdy protective guard of the helical dense web, which presents itself