Pull Station Guard Spacer, Open w/Conduit Knockout Back, Indoor, Outdoor, Color Clear, Material Polycarbonate, Mounting Surface, Width 8 1/2 in, Depth 2 in, Height 8 1/2 in, For Use With Pull Stations, Call Points, Push Buttons, Operating Temp. -40 Degrees to 250 Degrees F, Standards cUL, UL, Includes Mounting Hardware