STI-1217 SKU STI-1217-2658 Stopper Dome for Horn/Speaker/Strobe w/Open Bkbx Please log in to see price or purchase this item Request an account Line Comment Special Price Features:Protective polycarbonate cover for horn/speaker/strobeOpen back boxSlotted cover allows horn to be heardEasy access for serviceUL/cUL Listed, ADA CompliantSee install for Light Derating Factor3 year guarantee