Our locking style column mailbox is constructed from cast aluminum and features a 2.5" high by 10" wide solid brass mail slot. Mail is retrieved through an 8.5" wide by 6.5" high door and includes a lock and two keys. A non-locking thumb latch is available as an option. Each mailbox is available in a durable powder coat finish in four contemporary colors and your choice of a plain or eagle door style. May be used for residential door mail delivery. Dimensions: 11.5"W x 13.5"H x 15.75"D Rough Opening: 10.75"W x 12.5"H x 15.25"D Mailbox only...does not include masonry column.