Air Vent White Aluminum Wall Louver 18 L x 12 W x 1-1/2 D in. (Pack of 6)Air Vent brings to you the 12 x 18 Aluminum Louver, the exhaust vent that provides cross ventilation and works well as an attic vent, roof vent, or a gable vent. This roof louver helps maintain proper airflow and keeps elements like dirt, water, and debris at bay away from the building. The exhaust louver vent also has a flush flange. Bring the Air Vent louvered gable vent to increase the efficacy of ventilation in your homes and offices. UPC: