Gaines Eagle Design Wall Mount Mailbox With Locking Insert - White Polished Brass Color - White Polished Brass. Comes with locking insert. Constructed from aerospace-grade, die-cast rust-proof aluminum. Easy installation-all hardware is included. Comes with simple instructions. Hardware is Included. Mailbox slot size WITHOUT insert - 12"W x 3.5"D , slot size WITH locking insert - 8"W x 1 1/8"D Mailbox: Height - 14-3/8" , Width - 14-7/8" , Depth - 7-1/2" , Weight - 13lbs