Feit Electric 13-Watt Equivalent PL CFLNI Quad Tube 2-Pin GX23-2 Base Compact Fluorescent CFL Light Bulb, Cool White 4100K (1-Bulb) BPPLD13/41/HDRP - The Home Depot
SunBlaster 13 Watt CFL Grow Lamp, 4 Pack
13 Watt GU24 Base Mini Spiral Compact Fluorescent Bulb 4100K Cool Whit – Green Electrical Supply
Satco 13 watt Fluorescent T2 Spiral CFL Bulb 13 W 60 W Incandescent Equivalent Wattage 120 V AC 900 lm Spiral T2 Size White Light Color E26 Base 12000 Hour 4400.3 F 2426.8 C Color Temperature - Office Depot
4PK 13W T2 DL CFL BULB - Modern Hardware | Modern Hardware