Barber Colman MK4 Damper Actuator, Proportional, Control Signal: Proportional, Fail Safe Mode: Spring Return, 67.5 Inch-lb, 4 - 5 Inch Stroke, 30 psig, -20 to 160 deg F, Die Cast Aluminum, 17-5/8 Inch H x 7-3/4 Inch W x 7-5/8 Inch D
Application: Dampers and Air Valves