The Pisces Floor Lamp is a simple modern up light that is available in either satin steel or black. Scientific lab testing confirmed that this incandescent floor lamp provides 18% more ambient room light and 35% more efficiency in overall room illumination than a standard 300 watt halogen floor lamp. Pisces Floor Lamps have a rotary high/low switch on the shade that controls two 150 watt max bulbs. They are not compatible with CFL bulbs. The base measures 11" in diameter.