Photo 1 of (Pack of 4) 13W CFL Light Bulbs – Single Tube, 2-Pin GX23 Base, 5000K Bright White – Compatible with Sylvania CF13DS/850, Philips PL-S 13W/850, GE F13BX/850

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Photo 1 of (Pack of 4) 13W CFL Light Bulbs – Single Tube, 2-Pin GX23 Base, 5000K Bright White – Compatible with Sylvania CF13DS/850, Philips PL-S 13W/850, GE F13BX/850Photo 2 of (Pack of 4) 13W CFL Light Bulbs – Single Tube, 2-Pin GX23 Base, 5000K Bright White – Compatible with Sylvania CF13DS/850, Philips PL-S 13W/850, GE F13BX/850