Smoke Detector Guard, Open Back, Indoor, Color Silver, Material Stainless Steel, Mounting Flush, Width 7 in, Depth 3 1/4 in, Height 7 in, Diameter 7 3/4 in, For Use With Smoke Detectors, Operating Temp. -40 Degrees to 250 Degrees F, Standards UL, Features Guard Helps Protect Against Vandalism and Damage, Includes Mounting Hardware. This item has been restricted from sale in the following state (s): []