4 URD | 4 Inch Round Motorized Damper | EWC Controls Description_Lead Free Hex Bushings Among the winners

Among the winners

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4 URD | 4 Inch Round Motorized Damper | EWC Controls Description_Lead Free Hex Bushings Among the winners4 Inch Round Motorized Damper The URD series of round motorized dampers are a double layered blade design with an integrated Poron sealing gasket. The superior design insures long life and zero maintenance. URD dampers are easy to install, easy to wire up, and come with a 5 year warranty. The URD damper is constructed of heavy 24 gauge galvanized steel with factory rolled stiffening beads. The nylon bearings and ThermoTuff drive shafts insure smooth,