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Sylvania 21117 (6-Pack) CF13DD/827/ECO 13-Watt Double Tube Compact Fluorescent Light Bulb, 2700K, 780 Lumens, 82 CRI, T4 Shape, GX23-2 Bi-Pin Base - Amazon.com
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SYLVANIA 20691/21117 - CF13DD/827/ECO - 13 Watt CFL Light Bulb - Compact Fluorescent - 2 Pin GX23-2 Base - 2700K - Fluorescent Tubes - Amazon.com
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Sylvania 21120 4-Pack CF13DD/841/ECO 13-Watt Double Tube Compact Fluorescent Light Bulb, 4100K, 780 Lumens, 82 CRI, T4 Shape, GX23-2 Bi-Pin Base - Walmart.com
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