EWC Controls ND Series 10 in. x 14 in. rectangular motorized zone damper. Extruded aluminum with overlapping parallel blades and nylon bearings; 24 VAC 3-wire power-open/power-close (or floating) actuator rated 18 in-lb torque; ~540 CFM, rated to 1.5 in. w.c. and 1500 FPM. LED open/closed indicators.
