Designed for exhausting kitchen and bathroom fans through your home's soffit, this Imperial Soffit Exhaust Vent easily installs under the soffit panel and adapts to 4-in and 6-in round exhaust ducts. A butterfly damper allows for maximum airflow, while helping to keep cold air out and conserve energy. Its grille and damper also help to prevent pests from entering the home. The exhaust vent features a low-profile flush mount design, and is made from UV-resistant plastic that not only resists fading and discoloration from the sun, but is paintable to match the color of your home's soffit.