this is a linkage-only retrofit kit

Integrated Charge Port: Includes a front-mounted 1/4" SAE flare port for efficient system diagnostics and field recharging

this factory-spec electric heater element provides the exact wattage required to meet system design parameters

Industrial Build Quality: Features snap-acting contacts rated for 3FLA and 18 LRA at 24 VAC

Siemens Building Technology GNP191.1P Actuator 320819-301 this is a linkage-only retrofitThe Siemens GNP191. 1P is a high performance, fast acting electronic damper actuator engineered for critical airflow control in laboratory fume hoods and high speed VAV systems. This OpenAir series actuator delivers 53 lb in of torque with a rapid 2 second runtime, ensuring immediate response to pressure or setpoint changes. Built with brushless DC motor technology and integrated stall protection, the unit supports fail safe operation via internal