Protects a wide range of exit signs from vandalism and accidental damage. Wherever exit signs are at risk from either intentional or accidental damage, installation of this super tough cover is the solution to the problem. This good-looking Stopper measures 20.5 inches (520 mm) long by 15.5 inches (394 mm) wide by 6 inches (152 mm) deep, large enough to cover a wide range of exit sign models available today. Installation is simple with anchors and screws provided. Backed by a lifetime guarantee. As all STI protective covers, this Stopper is backed by a lifetime guarantee against breakage in normal use. It is constructed of 9-gauge, welded steel wire, coated with a tough, corrosion resistant polyester shell. To provide even greater protection against vandalism, tamper resistant screws and a matching bit are available.