Safety Technology International, Inc. -STI 9740 Exit Sign Damage Stopper, Protective Coated Steel Wire Guard - The Exit Sign Damage Stopper 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 tough cover is the solution to the problem. Super tough construction makes it extremely difficult to break. 9-gauge welded steel wire; coated with a tough, corrosion resistant polyester shell. Stopper measures 20.5 inches (520 mm) long by 15.5 inches (394 mm) wide by 6 inches (152 mm) inches deep. Large enough to cover a wide range of the exit sign models available today. Installation is simple with anchors and screws provided. For greater protection against vandalism tamper resistant screws and installation bit are also available (Screws: STI model SUB-82; Installation Bit: STI model 19038) both sold separately. Simple removal for light bulb replacement or any other maintenance needs. Fast and easy installation. May be painted prior to installation to match decor. As with all STI protective covers, this Stopper is backed by a three year guarantee against breakage in normal use. NOTE: Guard may reduce projected light values. Verify correct exit light requirements when using guard (NFPA 101). Safety Technology International, Inc. "We protect the things that protect you"