VALVE/DAMPER ACTUATOR FLOATING CONTROL, 300 LB-IN TORQUE, 90 OR 160 DEGREE STROKE, 2 OR 4 MINUTE TIMING, 24 VAC, 50/60 HZ, DUAL SHAFT. 17VA 24V 50/60HZ ADJ STROKE. 2-4 MIN TIMING 300LB-IN TORQUE WITH ADAPTER BRKT TRADELINE