Royal Designs 3-Way Mogul Base Light Bulb, 100/200/300-Watt, Soft White Incandescent, A21,120V (LB-1002-1) Mogul Brass Base 3 Way Switching Light Bulb - 100/200/300 watts, Dimmable Rated Life: 1500 hours Frosted Bulb, 120 volts Lumens (light output): 1250/2650/3900