Belimo FSLF120 US Fire and Smoke Control Damper …
Belimo FSLF120 US Fire and Smoke Control Damper Actuator, On/Off, Spring Return, 350 Degree F for Half Hour, 15 Seconds Cycle Time, 3', 18 Ga, 2 Color Coded Leads, 24 V: Actuator Blocks: Amazon.com: Industrial & Scientific