4x 13W G24q-1, 4 pin, Low Energy CFL BLD Double Turn Light Bulb Cool White Lamp – ASA College: Florida
Feit Electric 13-Watt Equivalent PL Quad Tube CFLNI 4-Pin Plugin G24Q-1 Base CFL Replacement LED Light Bulb, Cool White 4100K (1-Bulb) BPPLD13E841LEDG2HDRP - The Home Depot
G24Q-1 13 watt 4 pin CFL double turn bulb - Light Bulbs from Ocean Lighting UK