Half Dome Viewing Angle 180 Degrees Diameter 18 in Lens Material Scratch Resistant Acrylic Mounting Location Wall/Ceiling Mirror Environment Indoor Includes Mounting Hardware Yes Dome Height 8 in Approx Viewing Distance 18 ft Backing No Back Rim Type Acrylic Includes Mounting Holes Screws Anchors Scratch Resistant Half Dome Mirror Scratch Resistant Half Dome Mirror