Centrifugal upblast roof exhaust fan application industrial and commercial buildings restaurants schools drive type belt drive wheel diameter 11 1 4 in base diameter not applicable base length 22 in base width 22 in base shape square maximum static pressure 1 1 4 in wc maximum airflow 1 549 cfm minimum airflow 861 cfm maximum motor horsepower 1 3 hp minimum motor horsepower 1 4 hp maximum motor speed 1 820 rpm minimum motor speed 1 660 rpm assembly unassembled
