The Johnson Controls M9310-HGA-2 Damper Actuator is a non-spring return actuator that is used to operate control of HVAC dampers with high accuracy. This actuator has a size of 80" and the differential type is adjustable; the actuator runs on 24V, saving energy. #JohnsonControls #M9310-HGA-2 #DampersActuatorsNon-Spring #JohnsonControlsparts #PartsHnC #PartsHnCBuzz #HVACParts #Furna... https://www.partshnc.com/m9310-hga-2-johnson-controls-24v-88in-nsr-90sec-damp-actr