The Johnson Controls D-4073-2 is a pneumatic piston damper actuator designed to operate within a power range of 8-13 psi. Known for their high quality and reliability, Johnson Controls is a trusted brand in the HVAC and refrigeration industry. This specific product is ideal for controlling the movement of dampers in heating, ventilation, and air conditioning systems, ensuring efficient and precise control of airflow. Its durable construction and precise performance make it a valuable component for any HVAC system.