Pneumatic Damper Actuator, Actuator Connection Ball Joint Connector, Actuator Type Linear, Air Connection Size 1/8 in, Air Connection Type NPT, Application Dampers, Control Pressure – Maximum 30 psi, Control Pressure – Minimum 20 psi, Diaphragm Material Synthetic Elastomer, Fire/Smoke Application Not UL Recognized Components for Fire/Smoke Applications, Includes Positioner Positioner Not Included, Installation Orientation Versatile, Manufacturer Series D-3153