Feit Electric 13W Equiv PL CFLNI Twin Tube 2-Pin Plug-in GX23 Base Compact Fluorescent CFL Light Bulb, Cool White 4100K (6-Pack) BPPL13/41/HDRP/6 - The Home Depot
Feit Electric 13-Watt Equivalent PL CFLNI Twin Tube 2-Pin GX23 Base Compact Fluorescent CFL Light Bulb, Cool White 4100K (1-Bulb) BPPL13/41/HDRP - The Home Depot
Philips 24W 4 Pin 2G11 Neutral White Long Single Twin Tube CFL Bulb: Amazon.com: Tools & Home Improvement