24Vac Damper Motor, 15 Lb-In Torque, 40 Second Max Run Time, 25 Second Max Nominal Opening Timing, Spring Return, Two Position SPST, Foot Mounted, 2 Hexagonal Shafts, 32-125 Degree Operating Temperture, 5-95% RH Operating Humidty Range

Economizer Damper Actuator, Three Position Control Signal, 24Vac, Spring Return, Foot Mounted, 25 Lb-In, 90 Degree Max Stroke,18 Second Nominal Spring Return, 90 Second Nominal Opening Timing, Counter Clock Wise Rotation