Siemens GDE131.1U Electric Damper Actuator – 44 lb-in, 24 Vac, Floating Control, Non-Spring Return 24V Non-spring Return Actuator, Floating Point, 44 lb-in […] Read More… from Siemens GDE131.1U Electric Damper Actuator – 44 lb-in, 24 Vac, Floating Control, Non-Spring Return