The Mail safe II Locking Post Mount Rural Mailbox is constructed from heavy-duty steel and features a black powder coat finish for lasting durability. The mailbox features a cam key lock for mail theft prevention and security. Includes 2 keys. The fashionable door helps to conceal and protect the large incoming mail slot and key lock for added security. The mailbox is a large size unit that offers ample space to hold various mail types and large volume mail deliveries. Installation is made easy with the versatility of the mailbox to be mounting at the side or the bottom of the unit. This mailbox is proudly made in the United States and has been approved by the United States Postal Service Postmaster General.