the 57-inch length is optimized for larger ductwork where deep penetration is required to achieve a representative air sample

Airflow Efficiency: Specifically engineered vent spacing allows for maximum CFM delivery across the coils

the mainline air volume would overwhelm the thermostat's bleed action

eliminating the need for brazing the equalizer line in tight spaces

The assembly is designed for a 6-inch air tube length

Siemens Building Technology GDE141.1Q Actuator 318518-761 the 57-inch length is optimizedUpgrade your air handling systems with the Siemens OpenAir GDE141. 1Q, a robust non spring return actuator engineered for low torque VAV applications and small dampers. This unit delivers 44 lb in torque and features versatile 2 position floating control logic, ensuring precise airflow management in commercial HVAC environments. Operating on a standard 24V AC DC power supply, the GDE141. 1Q is designed for high cycle reliability, rated for up to