The Hamilton Locking Mailbox 

For protection against mail theft, Gibraltar Mailboxes offers dependable security with the beautifully crafted, Hamilton Locking Mailbox.
The Hamilton is made from rust-proof, heavy-duty cast aluminum then fully powder-coated for resistance against weathering and features a wide, concealed incoming mail slot, approximately 12.5 inches wide and 1.75 inches tall, to allow mail in and keep thieves out.