Siemens GND221.1U Spring Return OpenAir Fire and Smoke Damper Actuator, 53 lb-in [New]

Siemens Siemens GND221.1U Spring Return OpenAir Fire and Smoke Damper Actuator, 53 lb-in, 120 VAC, On/Off Control Signal, 15 Second Run Time, 15 Second Spring Return, NEMA 1 Enclosure, 3' Standard Cable. Siemens. Siemens. GND221.1U.