Pneumatic Actuator Operating PSI Range 3 to 7 Max Air Pressure 30 psi Stroke 4 in Nominal Spring Range 3 to 7 psi Mounting Type Pivot Net Force Exerted @ 0 PSI 33 lb Net Force Exerted @ 18 PSI 121 lb Length 10 in Width 4 19/32 in Height 4 5/8 in Provides Modulating or Two Position Control For Use With Dampers or Air Valves