The glassmaker''s craft of using an ''optic mold'' to create desired interior textures and designs was invented by Roman glassworkers and flourished in Venice in the Middle Ages. Using this ancient ''optic'' technique, we house a glass Bulbs (Not Included) in a hand-blown oval diffuser. This diffuser is perfectly clear on the outside with a wavy horizontal pattern worked in its Bulbs (Not Included)-facing side. These interior lines are in the ''optic'' tradition, valued in heritage pieces such as Depression glass.Specifications:Included backplate measures as 12.75" High x 5"WideRequires 1 x 4-watt G9 Wedgebase Bulbs (Not Included) (Integrated)Voltage - 120300 Lumens, 90 CRI, 3000K Color TemperatureDimmableUL certified in compliance with nationally recognized product safety standards