STI’s Wire Guard Damage Stopper (STI-9729) is designed to increase the productivity of devices while helping to protect against vandalism, accidental damage and theft. Constructed of tough, 9-gauge steel wire coated with corrosion-resistant polyester, this cage is recommended for areas where abuse is severe or it is imperative that important devices continue to operate for the safety of building occupants. An array of wire guards is available to help protect beam smoke guards, smoke detectors, motion detectors, speakers/strobes, lights, exit signs, clocks and bells. Many models are UL listed.