The Lambro 4 In. white plastic exhaust wall hood vent with 11 In. pipe is ideal for venting through the wall. This vent is used for clothes dryer exhaust, bath fan exhaust and other general venting applications. The exhaust vent allows for maximum exhaust airflow when venting a clothes dryer. The built in damper prevents back drafts while the removable guard prevents critters from entering the home through the vent. The plastic vent has a UV additive to prevent premature fading due to the sun. Other models and colors available.