Pneumatic Damper Actuator, Application Dampers, Fire/Smoke Application UL Recognized Components for Fire/Smoke Applications, Includes Positioner Positioner Not Included, Manufacturer Series MP909E, Mounting Hardware Included Mounting Bracket, Mounting Type Trunnion, Operating Temperature - Maximum 160 Degrees F, Operating Temperature - Minimum -20 Degrees F, Spring Range Maximum 10 psi