Resideo RRD7 Retrofit Round Damper W/7"-Duct

The Resideo RRD7 is an all in one part designed to enhance the circulation of air in home heating and cooling systems. This retrofit round damper comes in the perfect size to easily fit into existing 7-inch diameter ductwork which makes it ideal for enhancing comfort control. The damper is constructed out of high quality galvanized steel which provides both durability and reliable performance. The damper is operated by a 24 VAC power supply, and it takes 90 seconds to open and close, which allows you to adjust the flow of conditioned air accurately. Its small size and low noise level contribute to the formation of comfortable indoor climate.