This steel cage is designed to protect beacon and alarms from vandalism and accidental damage. Constructed of heavy gauge steel wire with corrosion resistant polyester coating. As all STI protective covers, this guard is backed by a three year guarantee against breakage in normal use. Installation and servicing are easy. Highly recommended for areas where abuse to beacons and alarms is severe. Also known as -SAFETY TECHNOLOGY INTERNATIONAL STI9614 Audible/Strobe Guard,Steel Wire,Surface