Realtors, homeowners and maintenance companies have been using lockboxes for many years. They were primarily two different sizes available to choose from. One design which was used by Supra as well as Avanti Guardian had a removable lid design, which allowed you to access the keys from the front. The other model was by Shurlok, which had a key access door on the side. Both of these lockbox designs were only capable of holding two to three keys.

Shurlok recognized a need to provide a larger lockbox that would accommodate the storage of a business card, and/or a card access card as well as the ability to hold keys. The solution that they have provided is called the Shurlok Key Guard Pro which is a larger lockbox with a complete rubber case and a plastic door cover to protect the combination pad from the elements. In order to access the box, you simply need to enter in the code you choose, on the push button keypad, which can be either a numeric or letter code. By having each button labeled the same as the buttons on a telephone, it is easier to have more choices for a code.

Lockboxes very easy to operate and to program. This is a great design for a lockbox and provides the necessary additional room to store the card access cards.