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Satco S8163 4100K 55-Watt 2GX13 T5 Circline High Performance Lamp, Cool White - Fluorescent Tubes - Amazon.com
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SYLVANIA T5 Circline Fluorescent Tube Light Bulb, 40W, Soft White Color Temperature, 1 pack - Fluorescent Tubes - Amazon.com
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Satco HyGrade S6596 - FC552C/SW/TC - Fluorescent Circline Lamp - 55 Watt - T9 - 4-Pin (G10q) - 3,000 Kelvin (Warm White) - Circular - Fluorescent - Light Bulbs
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Feit Electric Color select 30-Watt EQ 9-in Cool White G24q-2 Pin Base Circline Type A LED Tube Light Bulb in the LED Tube Light Bulbs department at Lowes.com
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