lumenivo 13 Watt Quad Tube Fluorescent Lamp with GX23-2, 2 Pin Base 3500k Cool White U Shaped Compact Fluorescent Bulbs 2 Pin - PLC 13w 2 Pin Double Tubes CFL with 810 Lumens Output - 4 Pack - Yahoo Shopping
Feit Electric 13-Watt Equivalent PL CFLNI Quad Tube 2-Pin GX23-2 Base Compact Fluorescent CFL Light Bulb, Soft White 2700K (1-Bulb) BPPLD13/HDRP - The Home Depot
HP21327SP ROBERTSON 13W 2-pin CFL Magnetic Ballast | 277V Side Exit Leads
GE 13-Watt CFL Light Bulb, Biax 2 Pin, 825 Lumens | Vanderhoof Hardware Company Inc.