Damper, ND, Rectangular Motorized, Side Mount, 24" x 8" EWC-ND-24X8

The Motorized Rectangular Damper (EWC-ND-24X8) is a heavy-duty zoning component sized for 24″ x 8″ ductwork and designed to deliver precise airflow control in multi-zone HVAC systems. Constructed with an extruded aluminum frame, overlapping parallel blades and nylon bearing bushings for quiet operation, it’s rated for static pressures up to 1.5″ w.c. and achieves a low leakage rate of approximately 3–5% when installed properly. Powered by 24 VAC (3-wire power-open/power-close), the actuator delivers roughly 10–18 in-lb torque and completes a full 90° rotation in about 15–35 seconds. It features green (open) and red (closed) LED indicators, a manual gear-release lever for field override, quick-connect terminals for fast wiring, and is rated for ambient operation from –22 °F to +122 °F. Technicians value its ready-to-install design, robust construction, and reliability in professional zoning setups.