This virtually indestructible cover (slotted for a horn/ strobe unit) is molded of clear, thick, UV-stabilized polycarbonate material and is designed to stop vandalism and accidental damage. The Horn/ Strobe Damage Stopper is backed by a lifetime guarantee against breakage in normal use. Slots in the STI-1210D allow the horn to be heard and the unit has an open back box with knockouts for mounting over exposed conduit. Also known as -Safety Technology STI1210D STI-1210D