May be used for U, S, P, S, residential door mail delivery, Made of brass, Vertical mail slot overall dimensions are 3-1/2"" W x 11"" H, Rough opening dimensions are 3"" W x 8-1/4"" H, Include a 1-3/4"" W x 7-3/4"" H spring-loaded flap, One piece design - does not include inside trim, Color: Antique, SKU: SBRI1988