Model 5000Numeric Door Lock box features a large steel lock box door lock for storing more keys and key cards. The large steel door lock box has the same basic design and function as our other Vault Locks door lock boxes, but with a larger body to hold multiple keys and/or key cards. That large steel lock box is a very convenient way to store and lock-up multiple items. As a 4-digit numeric door lock box, it gives you more combination code choices than a 3-digit lock box door model. Black sleeve protects shackle against scratches, and a door guard rubber bumper protects surfaces. Black. 4-digit numeric lockbox has the combination code preset to 0-0-0-0, but you can set your own combination, and change it whenever. 4 digits give you more code options than a 3-digit lockbox.