This Barska Multi-Purpose Drop Box 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 security deposit box accepts items up to 8.5 inches in width. The security safe box can be mounted directly to a wall using the included mounting hardware. The security box is protected by a key lock, with two keys included. Backed by a 1-year limited warranty.