The Lambro white plastic louvered bath fan exhaust vent kit featuring 4 In. x 8 Ft. UL 181 air connector is ideal for venting through the wall. This kit is used for bath fan exhaust and other general venting applications that require moist air and humidity from exiting the home. The multi flaps allows for maximum airflow while reducing back flow of exhaust air. The vent can be painted to match your homes trim color.