Rotary Pneumatic Actuator Operating PSI Range 0 to 20 Max Air Pressure 30 psi Nominal Spring Range 5 to 10 psi Mounting Type Fixed Net Force Exerted @ 0 PSI 42 lb Net Force Exerted @ 18 PSI 85 lb Length 8 1/4 in Width 4 1/2 in Height 4 1/2 in Provides CW or CCW Motion For Use With VAV Terminals Small Dampers and Valves Includes Mounting Bracket