New with box, complete with instructions and brackets. Perfect condition, fully functional. Spring Return Actuator by Belimo, model AF24-SR US. Specifications: 133 in-lb (15 Nm), Damper approx. 33 sq. ft, 24VAC/DC, Spring Return, Modulating and Fail-safe. Device measures 3 7/8 X 10 3/4 X 3 1/4 and weighs 2.8 kg.