These cages are an excellent way to help protect your beacons and sounders against both vandalism and accidental damage. The newest addition to the STI Wire Guard Range, these Stoppers were created in response to multiple requests from STI customers. They are easy to install with all screws and anchors provided. Constructed from corrosion resistant plastic coated, heavy-duty galvanised steel rod, they can cope with the severest of abuse from vandalism and accidental damage, and are for use internally and externally