HONEYWELL ARD9 9 inch Round Automatic Damper. Round damper with 24-volt, spring return damper motor used to control volume of circulating air in heating, cooling, and ventilating systems.
Shipped as power closed/spring return open damper, for use with Honeywell Zoning Systems.
Can be field-converted to power open/spring return closed damper when used as an independent zone or for fresh air intake.
Blade closes off tightly against gasket for minimal leakage.
Rated to operate up to 1 in. wc.
Available in 5, 6, 7, 8, 9, 10, 12, 14, 16, 18, and 20 in. diameter sizes.