Honeywell Home 20" Round Automatic TrueZONE Damper

Honeywell Automatic Round Damper power-close, spring-open models ensure low leakage while controlling circulating air in heating, cooling and ventilation systems. Features galvanized steel with single-blade damper, which closes off tightly against gasket for minimal leakage Designated as power closed/spring return open damper for use with Honeywell Zoning Systems Can be field-converted when used as an independent zone or for fresh air intake Rated to operate up to 1-inch wc Available in 5- to 10-inch, 12-, 14-, 16-, and 18-inch diameter sizes