Safeguard your mail with a curbside locking mailbox that protects against theft and vandalism Keep your mail secure with the heavy-gauge mailbox, made with galvanized welded steel. Locking access door is secured with a commercial-grade, high-security wafer lock. An exclusive patented, anti-pry latch helps to prevent leveraged entry. Patented Fast-Trak Mounting Plate lets you quickly and easily install your mailbox. Install on an existing post, platform or gang plank. Meets United States Postal Service specifications. Mail Boss(TM) Curbside Locking Mailbox, 13 3/4in. x 11 1/4in. x 21in., Granite is one of many Mail Sorters available through Office Depot. Made by Mail Boss.