Earth friendly - constructed using hand forged recycled steel and embellished with premium Crystal elements Suitable for any indoor location; may only be mounted horizontally or vertically CSA listed in compliance with Nationally recognized product safety standards Requires 4 x 60-watt E12 candelabra base incandescent bulbs (not included) - 120V Included backplate measures as 5"DIA. X 0.5"Thick Wherever you may fall on the nerd spectrum (and were right there with you), Orbital blends a love of space-age cues steeped in mid-century modern design, so even if you didnt grow up with a robot on your sci-fi-movie themed lunch box, theres plenty to love here. Gold Dust finish, textured center hub and a galaxy of crystals (not to mention easy assembly) make this one the ultimate stargazing experience.