Pneumatic Damper Actuator, Medium Actuator Force, 10 PSI Span on Positive Positioner, 4" Stroke, Spring Return, 25 PSI Maximum Operating Pressure, 6.6 Square Inch Diaphragm, Dual Barbed Fitting for 5/32" or 1/4" OD Tubing Actuator Air Connection, 5/32" Barb For Pilot, 1/4" Barb For Main , 1/4" Barb for Branch -28-160 Degree Temperature Range, 5-95% RH Humidity Range, Includes Balljoint , Positive Positioner and Fixed External Mounting Bracket with Balljoint