Florence Key keepers are designed to securely provide access to important keys to only those authorized to use them. So whether you need to provide access to a key that lets your mail carrier into your secure mailroom or into any other part of your facility, a Florence Key Keeper provides a simple, elegant solution. Prepared to accept the U.S. Postal Service Arrow Lock, key keepers may also be converted to locks appropriate for private uses so others on your staff can gain access to controlled areas.