Siemens GND221.1U/F


Damper Actuator Spring Return 2 Position Fire & Sm

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  • Factory New
Brand: Siemens Part #: 72229 Category: Manufacturer Part #: GND221.1U/F


The OpenAir direct-coupled, 2-position, spring return electronic damper actuators are UL listed for smoke control dampers or for combination fire/smoke rated dampers. Actuators are designed to operate reliably in smoke control systems requiring Underwriter’s Laboratories, Inc. UL555/555S rating when tested as an assembly with the damper and will meet requirements of UBC for 15 second opening and closing at 350°F (177°C).




Electronic Damper Actuators; OpenAir GND Series


Siemens – Data Sheet