SLEEKLIGHTING - 13Watt GU24 Base 2 Prong Light Bulbs- UL approved-120v 60Hz Light Bulb- Mini Twist Lock Spiral -Self Ballasted CFL Two Pin Fluorescent Bulbs- 5000K Daylight 4pack
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
13W Single Tube 2 Pin GX23 Base 4100K CFL - OEM manufacture