Linear Pneumatic Actuator Operating PSI Range 0 to 20 Max Air Pressure 30 psi Stroke 1 11/16 in Nominal Spring Range 8 to 13 psi Mounting Type Pivot Net Force Exerted @ 0 PSI 54 lb Net Force Exerted @ 18 PSI 47 lb Length 5 1/2 in Width 4 1/4 in Height 4 1/4 in Provides Control of VAV Terminal Units and Small Dampers For Use With VAV Terminals Small Dampers and Valves Includes Mounting Bracket