The VaultLOCKS® Wall Mounted Key Boxes make sure you won’t be locked-out again These wall mounted key boxes mount easily on an exterior wall or door jamb to store an “emergency” key that’ll come in very handy when you lose your house key. Since they’re 4-digit wall key boxes, you’ll get more combination code choices than with 3-digit wall mounted key boxes. These wall mounted key boxes each have a numeric combination preset to 0-0-0-0, but you can set your own combination code, and change it, at any time. Mounts permanently to any flat surface and includes mounting hardware. To access the keys, just enter the numeric combination, and pull the lockbox down. Rubber bumper protects wall surface. Black.