Stopper Dome for Horn/Speaker/Strobe, Enclosed Back, Indoor, Outdoor, Color Clear, Material Polycarbonate, Mounting Surface, Width 9 3/8 in, Depth 4 1/4 in, Height 8 1/2 in, For Use With Horns, Speakers, Strobes, Operating Temp. -40 Degrees to 250 Degrees F, Standards ADA Compliant, UL/cUL Listed, Features Helps Protect Device Against Vandalism and Accidental Damage, Includes Mounting Hardware