Siemens GLB132.1P, OpenAir GLB Series Electric Damper Actuator, rotary, non-spring return, 88 lb-in (10 Nm), 24 Vac, floating control, 90 sec run time, feedback potentiometer, plenum rated

Siemens GLB164.1P, OpenAir GLB Series Electric Damper Actuator, rotary, non-spring return, 88 lb-in (10 Nm), 24 Vac, 0 to 10Vdc control, 90 sec run time, adjustable span and offset, dual auxiliary switches, plenum rated