The Adir Corp Steel Drop Box can be used as a mail collection box for all outgoing or incoming mail. These boxes can also be used to keep private office correspondence confidential. It features a full piano hinged door and is constructed of durable, heavy-gauge steel with a scratch resistant finish. The drop slot measures 10 Inches wide x 5/16 Inches deep and the box measures 12 x 3 x 10 inches. These sturdy units mount securely to any wall or door. It includes a durable lock with two keys.