Satco S9303 LED Pl 4-Pin 5000K 950 lm G24Q Base Light Bulb with 120-Degree Beam Spread, 13W Replaces 18, 26, 32, and 42 watt CFL-s No re-wiring needed Instant on to full brightness / no flickering Vertical operation Voltage: 120-277 (Electronic Ballast)