 HONEYWELL ARD12 12 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.Features Galvanized steel. Single-blade damper. 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.
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