Damper in new bathroom fan/light flaps & is very annoying when the wind blows from the north ; apparently the outlet for the ductwork faces that direction & causes the damper to open & close continuously. Technician at the service center suggested a small piece of foam be added to stop the noise but that would allow more drafts to enter.
Thank you for your question on the model CVLD4. When you have the problem you are describing, we would normally suggest placing a damper on the outside roof or wall cap, where the duct work exits the house. If your fan uses four inch duct work and you can position the CVLD4 in a vertical position, this should correct the problem. Please contact our Technical Service Department at 888-336-6151 to discuss your situation in greater detail.
Date published: 2013-10-23