STI-9750 STI Strobe Wire Guard Ceiling Mount WhiteSTI borrowed from nature's master builder, the spider, to create a web of protection from vandalism and accidental damage with these tough wire guards. They are constructed of 9 gauge steel wire with corrosion resistant polyester coating. Main Features Helps protect from vandalism and accidental damage Corrosion resistant polyester coating For use with Edwards GC Series and Kidde EGC Series For indoor use Ceiling mount Simple removal for maintenance