M836A1042 DAMPER MOTOR, 24VAC, 20 LB-IN TORQUE, 40 SECOND MAX RUN TIME, 30 SECOND MAX NOMINAL OPENING TIMING, SPRING RETURN, TWO POSITION SPST, FOOT MOUNTED, 2 HEXAGONAL SHAFTS, 32-125 DEGREE OPERATING TEMPERATURE, 5-95% RH OPERATING HUMIDITY RANGE