Pneumatic Actuator, Operating PSI Range 0 to 20, Max. Air Pressure 25 psi, Stroke 3 in, Nominal Spring Range 8 to 13 psi, Net Force Exerted @ 0 PSI 54 lb, Net Force Exerted @ 18 PSI 47 lb, Length 11 in, Width 4 in, Height 4 in, Includes Universal Mounting Bracket