This foundation vent is designed for 16 inch by 8 inch openings. It features a vinyl frame and double pane glass. The unit is white and suitable for residential foundation ventilation. The design includes a sash mechanism that opens to allow airflow. The frame is sized to fit standard 8 by 16 inch vents. The glass is obscure type. An aluminum insect screen is included. The screen is removable for cleaning. The unit provides 57 square inches of net free area when open. It seals when closed. The material is rust proof. It is a replacement part for crawl space ventilation systems.