Long tubular diffusers of white translucent glass extend horizontally or vertically, accented with a wide simple cuff and back plate. Width/Diameter: 4.5"WHeight: 17"HExtension/Projection: 3.75"Backplate/Canopy/Base: 4.5" x 5"Shade Material: GlassNumber Of Lamps: 1Socket Type: E26 Medium Base - T8 BulbFixture may only be installed as shown in picture