The Gracie Lamp Base & Shade uses a 40 watt bulb, maximum. An energy efficient light bulb is included. The base measures 6 inches wide x 6 inches deep, and is 12 inches tall. The shade is 4 inches wide at the top, 10 inches wide at the bottom, and is 6.5 inches high. Runs on standard 120 voltage with a polarized plug.