Quick view Compare Add to Cart Siemens Siemens GVD221.1U, OpenAir GGD Series Electric Damper Actuator, rotary, spring return, 142 lb-in (16 Nm), 120 Vac, 2-position control, 15 sec run time, Fire/Smoke MSRP: Was: Now: $358.02 Quick view Compare Add to Cart
