STI’s polycarbonate covers help prevent theft and vandalism to larger keypads, access controls, volume and lighting controls and much more. Extremely difficult to break, these clear (or white) polycarbonate covers are molded from the same material used in football helmets. Covers increase the life and reliability of units by protecting them from accidental or intentional damage. Available in five models, they are constructed with a strong piano style hinge and offered with an open or enclosed back box, with or without a lock. They are part of a complete line of polycarbonate covers. They are backed by a three-year guarantee against breakage in normal use.