The Barska Large Locking Wall Mount Mailbox has been designed to provide a secure way of locking up important items such as suggestion slips, ballots, mail, documents, keys, money, and more. The top slot of the large mailbox accepts items up to 10 inches in width, and can be mounted directly to a wall using the included mounting hardware. The mailbox has pre-drilled mounting holes for easy setup. Backed by a 1-year limited warranty.