Pneumatic Damper Actuator, Actuator Connection Pivot, Actuator Type Linear, Air Connection Size 1/8 in, Air Connection Type NPT, Application Dampers, Control Pressure - Maximum 25 psi, Diaphragm Material Aluminum Alloy, Fire/Smoke Application Not UL Recognized Components for Fire/Smoke Applications, Force at 0 psi 54 lbf, Includes Positioner Positioner Not Included, Installation Orientation Versatile, Manufacturer Series D-4073, Mounting Hardware Included Auxiliary Mounting Bracket