STI-1210D SKU STI-1210D-2658 Horn/Strobe Damage Stopper w/Conduit Knockout Please log in to see price or purchase this item Request an account Line Comment Special Price Features:Protective polycarbonate cover for horn/strobe unitsOpen back boxConduit knockoutEasy access for serviceUL/cUL Listed, MEA 49-00-E, ADA CompliantSee install for Light Derating Factor3 year guarantee