SAFETY TECHNOLOGY INTERNATIONAL STI-8100-BK - SMOKE DETECTOR DAMAGE STP COVER BLACK - SMOKE DETECTOR DAMAGE STOPPER COVER INDOOR/OUTDOOR COLOR BLACK MATERIAL POLYCARBONATE MOUNTING SURFACE DEPTH 3 IN. FOR USE WITH SMOKE DETECTORS OPERATING TEMP -40 DEGREES TO 250 DEGREES F STANDARDS UL LISTED CSFM FM FEATURES POLYCARBONATE COVER HELPS PROTECT SMOKE DETECTORS AGAINST VANDALISM AND ACCIDENTAL DAMAGE EASY TO INSTALL IN AREAS WHERE PHYSICAL ABUSE IS CAUSING FALSE FIRE ALARMS OR HIGH MAINTENANCE COSTS UNITS LED REMAINS CLEARLY VISIBLE INCLUDES COVER - EQUAL TO G8731825