Honeywell ZD24X6TZ ZD True Zone Damper 28" x 6 inch Rectangle 24 Volt

motor on 6" side -- refer to pictures

Overview
The ZD is a power close and spring open damper. It has a 24-volt motor used to control circulating air in heating, cooling and ventilating systems. It is used when a normally-open damper is required. The ZD is typically used with the TrueZONE systems and other electronic zoning systems.
Features