What type of damper should be included at the termination of a dryer exhaust duct?

A backdraft damper should be included at the termination of a dryer exhaust duct to prevent the reverse flow of air when the dryer is not in operation. This is crucial because the backdraft damper allows the exhaust air generated during drying to exit the building while ensuring that outside air, rain, snow, and pests cannot enter through the dryer vent when it is not in use.

In addition to maintaining indoor air quality and preventing unwanted drafts, the backdraft damper contributes to the overall efficiency of the dryer system, reducing the risk of moisture buildup and potential mold growth inside the ductwork and the building itself. Proper installation of the backdraft damper is also essential for compliance with safety standards and building codes related to ventilation and exhaust systems.