Audible and Strobe Guard, Open Back, Indoor, Outdoor, Color White, Material Heavy Gauge Coated Steel Wire, Mounting Surface, Width 3 in, Depth 6 7/8 in, Height 3 in, Diameter 3 7/8 in, For Use With Beacons, Sounders, Operating Temp. -40 Degrees to 250 Degrees F, Includes Mounting Hardware