Check the listing for details. Mail Boss 7106 Curbside Security Locking Mailbox - Black. Color: Black, Condition: New. Listed at 149.00 USD. Elevate your curbside security with the Mail Boss 7106 Curbside Security Locking Mailbox, crafted for resilience and durability. This extra-large, black mailbox is fashioned from robust galvanized steel, promising resistance to the elements and a secure, locking mechanism for your peace of mind. With a height of 13.75 inches, a width of 11.25 inches, and a depth of 21 inches, it's designed to accommodate a substantial amount of mail and packages.The Mail Boss 7106 model is not just about functionality but also about style. It can be post-mounted, ensuring a seamless integration with your residential mailbox setup. The product includes three keys for easy access and comes with features such as weather resistance and a lockable design to keep your correspondence safe and dry.