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
Feit Electric® 13W PL Soft White Fluorescent Light Bulb - 10 Pack at Menards®
PL13/41K/2GX7/4 PIN SUPRA LIFE COMPACT FLUORESCENT LIGHT BULB – Bulborama