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PL5/27K 5 Watt 2700K Compact Fluorescent Lamp G23 Base, F5TT/827/SS, DT5/27, F5BX/SPX27/827, F5BX/827/ECO, CF5DS/827, CF5DS/827/ECO, PL-S 5W/27, PL-S 5W/827/2P/ALTO, CFS5W/827, #04123I, #S6300, #20325, #14671-2,#37654 PL5/41K 5 Watt 4100K Compact Fluorescent G23 Base, F5TT/841, DT5/41, PL-S 5W/841, PL-S 5W/841/2P/ALTO, F5BX/SPX27/841, F5BX/841/ECO, CF5DS/841, CF5DS/841/ECO, CFS5W/841, #S6301, #04123F, #97553, #14868-4,#20325,#37654,#14671-2 Eiko DT5/27 5 Watt 2700K Duo Tube G23 Base, F5TT/827/SS, DT5/27, F5BX/SPX27/827, F5BX/827/ECO, CF5DS/827, CF5DS/827/ECO, PL-S 5W/27, PL-S 5W/827/2P/ALTO, CFS5W/827, #04123I, #S6300, #20325, #14671-2,#37654
PL5/27K 5 Watt 2700K Compact Fluorescent Lamp G23 Base - 5 Watt 2700K Compact Fluorescent Lamp G23 Base, 10,000 Hour PL5/41K 5 Watt 4100K Compact Fluorescent G23 Base - 5 Watt Compact Fluorescent 4100K G23 Base, 10,000 Hour Eiko DT5/27 5 Watt 2700K Duo Tube G23 Base - 5 Watt 2700K Compact Fluorescent Lamp G23 Base, 10,000 Hour
PL7/27K 7 Watt 2700K Compact Fluorescent Lamp G23 Base, F7TT/827, DT7/27, PL-S 7W/827, PL-S 7W/827/2P/ALTO, F7BX/SPX27/827, F7BX/827/ECO,  CFS7W/827, CF7DS/827, CF7DS/827/ECO, #20327, #S6302, #97554, #02103D,#13576,#4871-8 PL7/30K 7 Watt 3000K Compact Fluorescent Lamp G23 Base, PL7-30K, DT7/30, F7BX/SPX30/830, CF7DS/830, PL-S 7W/30 PL7/35K 7 Watt 3500K Compact Fluorescent Lamp G23 Base, PL7-35K, F7TT/835, DT7/35, PL-S 7W/835, PL-S 7W/835/2P/ALTO, F7BX/SPX35/835, F7BX/835/ECO, CF7DS/835, CF7DS/835/ECO, CFS7W/835, #05994B, #20310, #14872-6, #S6303, #97556,#37659,#14872-6
PL7/27K 7 Watt 2700K Compact Fluorescent Lamp G23 Base -  7 Watt 2700K Compact Fluorescent Lamp G23 Base, 10,000 Hour PL7/30K 7 Watt 3000K Compact Fluorescent Lamp G23 Base -  7 Watt 3000K Compact Fluorescent Lamp G23 Base, 10,000 Hour PL7/35K 7 Watt 3500K Compact Fluorescent Lamp G23 Base -  7 Watt 3500K Compact Fluorescent Lamp G23 Base, 10,000 Hour
PL7/41K 7 Watt 4100K Compact Fluorescent Lamp G23 Base, F7TT/841, DT7/41, PL-S 7W/841, PL-S 7W/841/2P/ALTO, F7BX/SPX41/840, F7BX/841/ECO, CF7DS/841, CF7DS/841/ECO, CFS7W/841, #20304, #02103E, #14873-4, #97557,#37660 PL7/50K 7 Watt 5000K Compact Fluorescent Lamp G23 Base,PL7/50K 7 WATT 5000K COMPACT FLUORESCENT LAMP G23 BASE, PL7-50K, F7TT/850, DT7/50, PL-S 7W/850, PL-S 7W/850/2P/ALTO, CF7DS/850, CF7DS/850/ECO,  CFS7W/850, #14874-2, #02103H, #20307, #S6305 PL9/27K 9 Watt 2700K Compact Fluorescent Lamp G23 Base, F9TT/827, DT9/27, PL-S 9W/827, PL-S 9W/827/2P/ALTO, F9BX/SPX27/827, F9BX/827/ECO,  CF9DS/827, CF9DS/827/ECO, #20329, #02740B, #14867-6, #97558,#37651
PL7/41K 7 Watt 4100K Compact Fluorescent Lamp G23 Base -  7 Watt 4100K Compact Fluorescent Lamp G23 Base, 10,000 Hour PL7/50K 7 Watt 5000K Compact Fluorescent Lamp G23 Base -  7 Watt 5000K Compact Fluorescent Lamp G23 Base, 10,000 Hour PL9/27K 9 WATT 2700K COMPACT FLUORESCENT LAMP G23 BASE - 9 Watt 2700K (Warm White) Compact Fluorescent Lamp G23 Base, 10,000 Hour
PL9/35K 9 Watt 3500K Compact Fluorescent Lamp G23 Base, F9TT/835, DT9/35, PL-S 9W/835, PL-S 9W/835/2P/ALTO, F9BX/SPX27/835, F9BX/835/ECO, CF9DS/835, CF9DS/835/ECO, CFS9W/835, #22690A, #14869-2, #20333, #97560,#37652,#20305, PL9/41K 9 Watt 4100K Compact Fluorescent Lamp G23 Base, F9TT/841, DT9/41, PL-S 9W/841, PL-S 9W/841/2P/ALTO, F9BX/SPX41/841, F9BX/841/ECO, CF9DS/841, CF9DS/841/ECO, CFS9W/841, #01517B, #97561, #20305, #14870-0, #S6308,#37653 PL9/50K 9 Watt 5000K Compact Fluorescent Lamp G23 Base,F9TT/850,DT9/50,PL-S 9W/850,PL-S 9W/850/2P/ALTO,CF9DS/850,CF9DS/850/ECO,CFS9W/850,#S6309,#14680-3,#21540A,#20308,#49214
PL9/35K 9 Watt 3500K Compact Fluorescent Lamp G23 Base - 9 Watt 3500K Compact Fluorescent Lamp G23 Base, 10,000 Hour PL9/41K 9 WATT 4100K COMPACT FLUORESCENT LAMP G23 BASE - 9 Watt 4100K Compact Fluorescent Lamp, G23 Base, 10,000 Hour PL9/50K 9 Watt 5000K Compact Fluorescent Lamp G23 Base - 9 Watt 5000K Compact Fluorescent Lamp G23 Base, 10,000 Hour
PL7/65K 7 Watt 6500K Compact Fluorescent G23 Base,PL7/65K 7 WATT 6500K COMPACT FLUORESCENT G23 BASE, DT7/65, F7BX/SPX65/865, CF7DS/865, PL-S 7W/65, 7 WATT DAYLIGHT COMPACT FLUORESCENT, PL7-6500K, DAYLIGHT PL13/27K 13 Watt 2700K Compact Fluorescent GX23 Base, F13TT/827, DT13/27, F13BX/SPX27/827, F13BX/827/ECO, PL-S 13W/827, PL-S 13W/827/2P/ALTO, CF13DS/827, CF13DS/827/ECO, CFD13W/827, #02262D, #20331, #14681-1, #S6317, #97573,#14650 PL13/30K 13 Watt 3000K Compact Fluorescent GX23 Base,PL13/30K 13 WATT 3000K COMPACT FLUORESCENT LAMP GX23 BASE, F13TT/830, DT13/30, PL-S 13W/830, PL-S 13W/830/2P/ALTO, F13BX/830/ECO, CF13DS/830, CF13DS/830/ECO, #20283, #97574, #14683-7,#17612
PL7/65K 7 Watt 6500K Compact Fluorescent G23 Base - 7 Watt 6500K (Daylight) Compact Fluorescent Lamp G23 Base, 10,000 Hour PL13/27K 13 Watt 2700K Compact Fluorescent GX23 Base - 13 Watt, 2700K Compact Fluorescent Lamp GX23 Base, 10,000 Hour PL13/30K 13 WATT 3000K COMPACT FLUORESCENT LAMP GX23 BASE -  13 Watt 3000K Compact Fluorescent Lamp GX23 Base 10,000 Hour
PL13/35 13 Watt  3500K Compact Fluorescent Lamp GX23 Base, F13TT/835, DT13/35, PL-S 13W/835, PL-S 13W/835/2P/ALTO, F13BX/SPX35/835, F13BX/835/ECO, CF13DS/835, CF13DS/835/ECO, CFS13W/835, #22561A, #14684-5, #97569, #S6311,#17048,#20335 PL13/41K 13 Watt 4100K Compact Fluorescent Lamp GX23 Base, F13TT/841, DT13/41, PL-S 13W/841, PL-S 13W/841/2P/ALTO, F13BX/SPX41/841, F13BX/841/ECO, CF13DS/841, CF13DS/841/ECO, CFS13W/841, #97571, #00464A, #S6312, #14685-2,#20434,#20306 PL13/50K 13 Watt 5000K Compact Fluorescent Lamp GX23 Base, F13TT/850, DT13/50, PL-S 13W/850, PL-S 13W/850/2P/ALTO, F13BX/SPX50/850, F13BX/850/ECO, CF13DS/850, CF13DS/850 ECO, CFS13W/850, #97572, #03105B, #14687-8, #S6313,#20309
PL13/35 13 Watt  3500K Compact Fluorescent Lamp GX23 Base - 13 Watt 3500 Kelvin 82 CRI Compact Fluorescent Lamp GX23 Base, 10,000 Hour PL13/41K 13 Watt 4100K Compact Fluorescent Lamp GX23 Base - 13 Watt 4100 Kelvin (Cool White) 82 CRI Compact Fluorescent Lamp GX23 Base, 10,000 Hour PL13/50K 13 Watt 5000K Compact Fluorescent Lamp GX23 Base - 13 Watt 5000 Kelvin 82 CRI Compact Fluorescent Lamp GX23 Base, 10,000 Hour
PLQ13/27K 13 Watt 2700K Compact Fluorescent GX23-2 Base,CF13DD/827,F13DTT/827,QT13/27,F13DBX23T4/SPX27,F13DBX23/827/ECO,PL-C 13W/827/USA,PL-C 13W/827/USA/ALTO,CF13DD/827/ECO,CFD13W/827,#S6317,#38310-9,#06687C,#97586,#20691,#18557 Eiko 15564 QT13/27 Compact Fluorescent GX23-2 Base,CF13DD/827,F13DTT/827,QT13/27,F13DBX23T4/SPX27,F13DBX23/827/ECO,PL-C 13W/827/USA,PL-C 13W/827/USA/ALTO,CF13DD/827/ECO,CFD13W/827,#S6317,#38310-9,#06687C,#97586,#20691,#18557 PLQ18/27K 18 Watt 2700K Compact Fluorescent Lamp G24d-2 Base, F18DTT/827, QT18/27, PL-C 18W/827, PL-C 18W/827/ALTO, F18DBXT4/SPX27, F18DBX/827/ECO, CF18DD/827, CF18DD/827/ECO, CFD18W/827, #38316-6, #20676, #97577, #00126B, #S6321
PLQ13/27K 13 Watt 2700K Compact Fluorescent GX23-2 Base - 13 Watt Quad Tube Compact Fluorescent 2700K GX23-2 Base, 10,000 Hour Eiko 15564 QT13/27 Compact Fluorescent GX23-2 Base - 13 Watt Quad Tube Compact Fluorescent 2700K GX23-2 Base, 10,000 Hour PLQ18/27K 18 Watt 2700K Compact Fluorescent Lamp G24d-2 Base - 18 Watt 27K Compact Fluorescent, 10,000 Hour
PLQ18/30K 18 Watt 3000K Compact Fluorescent Lamp G24d-2 Base, F18DTT/830/G24D-2, QT18/30, PL-C 18W/830, PL-C 18W/830/ALTO, F18DBXT4/SPX30, F18DBX/830/ECO, CF18DD/830, CF18DD/830/ECO, CFD18W/830, #26370A, #97578, #20709, #38317-4, #S6322 PLQ18/35K 18 Watt 3500K Compact Fluorescent Lamp G24d-2 Base, F18DTT/835, QT18/35, PL-C 18W/835, PL-C 18W/835/ALTO, F18DBXT4/SPX35, F18DBX/835/ECO, CF18DD/835, CF18DD/835/ECO, CFD18W/835, #01306B, #S6323, #38318-2, #20677, #97579 PLQ18/41K 18 Watt 4100K Compact Fluorescent Lamp G24d-2 Base, F18DTT/841, QT18/41, PL-C 18W/841, PL-C 18W/841/ALTO, F18DBXT4/SPX41, F18DBX/841/ECO, CF18DD/841, CF18DD/841/ECO, CFD18W/841, #38319-0, #S6324, #07848E, #97580, #20678
PLQ18/30K 18 Watt 3000K Compact Fluorescent Lamp G24d-2 Base - 18 Watt 30K Quad Compact Fluorescent Lamp G24d-2 Base 10,000 Hour PLQ18/35K 18 Watt 3500K Compact Fluorescent Lamp G24d-2 Base - 18 Watt 35K Quad Compact Fluorescent Lamp G24d-2 Base, 10,000 Hour.
PLQ18/41K 18 Watt 4100K Compact Fluorescent Lamp G24d-2 Base - 18 Watt 4100K Cool White Quad Compact Fluorescent Lamp G24d-2 Base, 10,000 Hour
Eiko 49233 QT18/41 18W Quad-Tube 4100K G24d-2 Base Fluorescent, F18DTT/841, QT18/41, PL-C 18W/841, PL-C 18W/841/ALTO, F18DBXT4/SPX41, F18DBX/841/ECO, CF18DD/841, CF18DD/841/ECO, CFD18W/841, #38319-0, #S6324, #07848E, #97580, #20678 Eiko 15566 QT18/27 18W Quad-Tube 2700K G24d-2 Base Fluorescent, F18DTT/827, QT18/27, PL-C 18W/827, PL-C 18W/827/ALTO, F18DBXT4/SPX27, F18DBX/827/ECO, CF18DD/827, CF18DD/827/ECO, CFD18W/827, #38316-6, #20676, #97577, #00126B, #S6321 Eiko 49232 QT18/35 18W Quad-Tube 3500K G24d-2 Base Fluorescent, F18DTT/835, QT18/35, PL-C 18W/835, PL-C 18W/835/ALTO, F18DBXT4/SPX35, F18DBX/835/ECO, CF18DD/835, CF18DD/835/ECO, CFD18W/835, #01306B, #S6323, #38318-2, #20677, #97579
Eiko 49233 QT18/41 18W Quad-Tube 4100K G24d-2 Base Fluorescent - 18 Watt 4100K Cool White Quad Compact Fluorescent Lamp G24d-2 Base, 10,000 Hour Eiko 15566 QT18/27 18W Quad-Tube 2700K G24d-2 Base Fluorescent - 18 Watt 27K Compact Fluorescent, 10,000 Hour Eiko 49232 QT18/35 18W Quad-Tube 3500K G24d-2 Base Fluorescent - 18 Watt 35K Quad Compact Fluorescent Lamp G24d-2 Base, 10,000 Hour.
PLQ9/27K 9 Watt 2700K Quad Compact Fluorescent G23-2 Base, F9DTT/827, QT9/27, F9DBX23T4/SPX/27/827, F9DBX23T4SPX27/8, CF9DD/827, CF9DD/827/RP/ECO, CFD9W/827, #S6314, #05539A, #12409, #20537, QT9/27,32009Q,CF9D/827,PLD9/SP27K Eiko 15562 QT9/27, PLQ9/27K 9 Watt 2700K Quad Compact Fluorescent G23-2 Base, F9DTT/827, QT9/27, F9DBX23T4/SPX/27/827, F9DBX23T4SPX27/8, CF9DD/827, CF9DD/827/RP/ECO, CFD9W/827, #S6314, #05539A, #12409, #20537, QT9/27,32009Q,CF9D/827,PLD9/SP27K PLQ13/65K 13 Watt 6500K Quad Compact Fluorescent GX23-2 Base, F13DTT/865/GX23-2, QT13/65, #26368D, #49224, Daylight Compact Fluorescent
PLQ9/27K 9 Watt 2700K Quad Compact Fluorescent G23-2 Base - 9 Watt Quad Tube Compact Fluorescent 2700K G23-2 Base, 10,000 Hour Eiko 15562 QT9/27 9W Quad-Tube 2700K G23-2 Base Fluorescent - 9 Watt Quad Tube Compact Fluorescent 2700K G23-2 Base, 10,000 Hour PLQ13/65K 13 Watt 6500K Quad Compact Fluorescent GX23-2 Base - 13 Watt Quad Tube Compact Fluorescent 6500K GX23-2 Base, 10,000 Hour
Eiko 49224 QT13/65 13W Quad-Tube 6500K GX23-2 Base Fluorescent, F13DTT/865/GX23-2, QT13/65, #26368D, #49224, Daylight Compact Fluorescent Eiko 49223 QT13/50 13W Quad-Tube 5000K GX23-2 Base Fluorescent, PL13D/50/ECO, 32013Q/50K,CF13D/850 PLQ13/30K 13 Watt 3000K Compact Fluorescent GX23-2 Base,CF13DD/830,F13DTT/830,QT13/30,F13DBX23T4/SPX30,F13DBX23/830/ECO,PL-C13W/830/USA,PL-C 13W/830/USA/ALTO,CF13DD/830/ECO,CFD13W/830,#12956,#26368A,#97587,#20705,#S6318,#38311-7
Eiko 49224 QT13/65 13W Quad-Tube 6500K GX23-2 Base Fluorescent - 13 Watt Quad Tube Compact Fluorescent 6500K GX23-2 Base, 10,000 Hour Eiko 49223 QT13/50 13W Quad-Tube 5000K GX23-2 Base Fluorescent - 13 Watt Quad Tube Compact Fluorescent 5000K GX23-2 Base, 10,000 Hour PLQ13/30K 13 Watt 3000K Compact Fluorescent GX23-2 Base - 13 Watt Quad Tube Compact Fluorescent 3000K GX23-2 Base, 10,000 Hour
PLQ13/35K 13 Watt 3500K Compact Fluorescent GX23-2 Base,CF13DD/835,F13DTT/835,QT13/35,F13DBX23T4/SPX35,F13DBX23/835/ECO,PL-C 13W/835/USA,PL-C 13W/835/USA/ALTO,CF13DD/835/ECO,#18559,#S6319,#20692,#38312-5 PLQ13/41K 13 Watt 4100K Compact Fluorescent GX23-2 Base,CF13DD/841,F13DTT/841,QT13/41,F13DBX23T4/SPX41,F13DBX23/841/ECO,PL-C 13W/841/USA,PL-C 13W/841/USA/ALTO,CF13DD/841/ECO,CFD13W/841,#S6320,#38313-3,#02262E,#97589,#20708,#20532 Eiko 15576 QT13/35 Compact Fluorescent GX23-2 Base, CF13DD/835,F13DTT/835,QT13/35,F13DBX23T4/SPX35,F13DBX23/835/ECO,PL-C 13W/835/USA,PL-C 13W/835/USA/ALTO,CF13DD/835/ECO,#18559,#S6319,#20692,#38312-5
PLQ13/35K 13 Watt 3500K Compact Fluorescent GX23-2 Base - 13 Watt Quad Tube Compact Fluorescent 3500K GX23-2 Base, 10,000 Hour PLQ13/41K 13 Watt 4100K Compact Fluorescent GX23-2 Base - 13 Watt Quad Tube Compact Fluorescent 4100K GX23-2 Base, 10,000 Hour Eiko 15576 QT13/35 Compact Fluorescent GX23-2 Base - 13 Watt Quad Tube Compact Fluorescent 3500K GX23-2 Base, 10,000 Hour
Eiko 49084 QT13/41 13W Quad-Tube 4100K GX23-2 Base Fluorescent,CF13DD/841,F13DTT/841,QT13/41,F13DBX23T4/SPX41,F13DBX23/841/ECO,PL-C 13W/841/USA,PL-C 13W/841/USA/ALTO,CF13DD/841/ECO,CFD13W /841,#S6320,#38313-3,#02262E,#97589,#20708,#20532 PLQ26/27K 26 Watt 2700K Compact Fluorescent Lamp G24d-3 Base, F26DTT/827, QT26/27, PL-C 26W/827, PL-C 26W/827/ALTO, F26DBXT4/SPX27, F26DBX/827/ECO, CF26DD/827, CF26DD/827/ECO, CFD26W/827, #06269A, #S6325, #38321-6, #20679, #97606 PLQ26/30K 26 WATT 3000K COMPACT FLUORESCENT LAMP G24D-3 BASE, QT26/30, PL-C 26W/830, PL-C 26W/830/ALTO, F26DBXT4/SPX30, F26DBX/830/ECO, CF26DD/830, CF26DD/830/ECO, CFD26W/830, #S6326, #38322-4, #97607, #20710
Eiko 49084 QT13/41 13W Quad-Tube 4100K GX23-2 Base Fluorescent - 13 Watt Quad Tube Compact Fluorescent 4100K GX23-2 Base, 10,000 Hour PLQ26/27K 26 Watt 2700K Compact Fluorescent Lamp G24d-3 Base - 26 Watt 27K Compact Fluorescent Lamp G24d-3 Base 10,000 Hour
PLQ26/30K 26 WATT 3000K COMPACT FLUORESCENT LAMP G24D-3 BASE - 26 Watt 3000K Quad Compact Fluorescent Lamp G24d-3 Base 10,000 Hour
PLQ26/35K 26 WATT 3500K COMPACT FLUORESCENT LAMP G24D-3 BASE, F26DTT/835, QT26/35, PL-C 26W/835, PL-C 26W/835/ALTO, F26DBXT4/SPX35, F26DBX/835/ECO, CF26DD/835, CF26DD/835/ECO, CFD26W/835, #20680, #97608, #01721A, #38323-2, #S6327 PLQ26/41K 26 WATT 4100K COMPACT FLUORESCENT LAMP G24D-3 BASE, F26DTT/841, QT26/41, PL-C 26W/841, PL-C 26W/841/ALTO, F26DBXT4/SPX41, F26DBX/841/ECO, CF26DD/841, CF26DD/841/ECO, CFD26W/841, #38324-0, #S6328, #00704A, #97609, #20681 PL9/65K 9 Watt 6500K Compact Fluorescent G23 Base,PL9/65K 9 WATT 6500K COMPACT FLUORESCENT LAMP G23 BASE, F9TT/865/G23,DT9/65, #24934A, #49215, DAYLIGHT COMPACT FLUORESCENT
PLQ26/35K 26 WATT 3500K COMPACT FLUORESCENT LAMP G24D-3 BASE - 26 Watt 3500K Quad Compact Fluorescent Lamp G24d-3 Base 10,000 Hour PLQ26/41K 26 WATT 4100K COMPACT FLUORESCENT LAMP G24D-3 BASE - 26 Watt 4100K Quad Compact Fluorescent Lamp G24d-3 Base 10,000 Hour PL9/65K 9 Watt 6500K Compact Fluorescent G23 Base - 9 Watt 6500 Kelvin (DayLight) Compact Fluorescent G23 Base 10,000 Hour
PL13/65K 13 Watt 6500K Compact Fluorescent Lamp GX23 Base, F13TT/865, DT13/65, PL-S 13W/865, PL-S 13W/865/2P/ALTO, F13BX/SPX65/865, F13BX/865/ECO, CF13DS/865, CF13DS/865/ECO, CFS13W/865, DAYLIGHT CFL, DAYLIGHT COMPACT FLUORESCENT BULB PLQ26/65K 26 WATT 6500K QUAD COMPACT FLUORESCENT G24D-3 BASE, F26DTT/865, QT26/65, #20537A, #49240, DAYLIGHT COMPACT FLUORESCENT PL13/41K 13 Watt 4100K Shatterproof CFL G23 Base, Shatterproof F13TT/841, Shatterproof DT13/41, shatterproof PL-S 13W/841, shatterproof PL-S 13W/841/2P/ALTO, shatterproof F13BX/SPX41/841, shatterproof F13BX/841/ECO, CF13DS/841, CF13DS/841/ECO, CFS13W/841
PL13/65K 13 WATT 6500K COMPACT FLUORESCENT LAMP GX23 BASE - 13 Watt 6500 Kelvin (DayLight) 82 CRI Compact Fluorescent Lamp GX23 Base, 10,000 Hour PLQ26/65K 26 WATT 6500K QUAD COMPACT FLUORESCENT G24D-3 BASE - 26 Watt Quad Tube Compact Fluorescent 6500K G24d-3 Base, 10,000 Hour PL13/41K 13 Watt 4100K Shatterproof CFL G23 Base - 13 Watt 4100 Kelvin (Cool White) 82 CRI Safety Coated CFL, GX23 Base, 10,000 Hour
   
 
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2 Pin Compact Fluorescents have a center post and two brass pins in varying configurations. The reason for the various base configurations is so that only the wattage bulb that the fixture was designed for will work in the fixture's socket. Common 2 Pin Compact Fluorescent Bases are: G23-2, G24d-3, GX23-2, GX23, GX32d-3, GX24d-2 and GX32d-2.