The Gibraltar Mailboxes SM16K-00 Marshall Locking Mailbox is a large, black steel mailbox with a traditional style. It features one compartment, a lock for security, and comes with 2 keys. This mailboxes are designed for residential use and are weather-resistant with a matte finish. It is post-mounted for easy installation. Made by Gibraltar, this mailbox is a reliable and durable option for securely storing your mail.