The Lambro 4 in white plastic exhaust vent is ideal for venting through the soffit. This vent is used for clothes dryer exhaust, bath fan exhaust and other general venting applications that require moist air and humidity from exiting the home. The exhaust vent allows for maximum airflow while reducing back flow of exhaust air. The built in damper prevents back drafts and critters from entering the home through the vent. The vent can be painted to match your home's trim color.