Air Vent Inc Foundation Vent 16" X 8" 45 Sq. In. Free Area, Aluminum mill - silver gray, 16" x 8" Stamped aluminum - Sliding damper 45 sq. in. free area #8 mesh screen with lintel Fits 16 x 8" opening - Overall size: 17" L X 7.8" H Image may slightly differ from actual product due to mfg design changes.