ImageItemSKUBase TypeBulb ShapeBulb TypeColor Temperature (kelvin)   
CF13SPE/827 13w spiral 27k G24q-1 4-pin base Cfl
HalcoHalco
CF13SPE/827 13w spiral 27k G24q-1 4-pin base Cfl
72811G24q-1SpiralPlug-In CFL2700 Kelvin
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CF18SPE/827 18w sprial 27k GX24q-2 4-pin base Cfl
EikoEiko
CF18SPE/827 18w sprial 27k GX24q-2 4-pin base Cfl
72810GX24q-2SpiralPlug-In CFL2700 Kelvin
Compare
CF13SPE/841 13w spiral 41k G24q-1 4-pin base Cfl
PhilipsPhilips
CF13SPE/841 13w spiral 41k G24q-1 4-pin base Cfl
72812G24q-1SpiralPlug-In CFL4100 Kelvin
Compare