UL Listed, NEMA Class 2

• Heavy-duty frame construction Nylon bushing for quieter operation Revolutionary motor with greater reliability LED's to show damper operation Low leakage Simple three wire hook-up Motor is always mounted on second dimension specified 97% leak-proof rating Overlapping parallel blade design insures low leakage The motor actuator housing has a NEMA 1 rating The LED display allows the installer to visually check the damper operation, with a sturdier frame, the damper installs in the duct much faster and easier and the nylon bushings insure quieter operation This is a feature that homeowners will never hear about quieter operation and a longer life motor equals no callbacks The motor for the ND damper is driven by 18 in-lb of torque, possesses a manual gear release, three wire power open/power closed operation and fail-safe LEDs for quick diagnostic checks The easy access, Quick-connecting terminal block eliminates the need for wire nuts and allows for trouble-free use The ND dampers combined with the ultra-zone zoning system provides the most comfortable and reliable system in the industry

The ND series of ultra Zone® dampers was designed with the installer and homeowners in mind. This damper is easy to install and easy to checkout. The LED display allows the installer to visually check the damper operation. With a sturdier frame, the damper installs in the duct much faster and easier and the nylon bushings insure quieter operation. This is a feature that homeowners will never hear about quieter operation and a longer life motor equals no call backs.