Photoelectric Smoke Detector Cover Indoor Outdoor Color White Material Steel Mounting Surface Width 7 3/8 in Depth 7 3/8 in Height 4 7/8 in For Use With Photoelectric Smoke Detectors Features Wire Guard Helps Protect Photoelectric Smoke Detectors Against Abuse Constructed From Heavy-Gauge Steel Coated with Corrosion Resistant Polyester Includes Wire Guard