6" DIAMETER 

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"DULUX 20W, 6.5"" diameter circl:CODE SYL-29236"	"DULUX 20W, 6.5"" diameter circl:CODE SYL-29236" Check Latest Price DULUX 20W, 6.5" diameter circline fluorescent lamp with 120V ballast, medium screw base, 3000K color temperature, 82 CRI CF20EL/C/830 ...
"DULUX 20W, 6.5"" diameter circl:CODE SYL-29246"	"DULUX 20W, 6.5"" diameter circl:CODE SYL-29246" Check Latest Price DULUX 20W, 6.5" diameter circline fluorescent lamp with 120V ballast, medium screw base, 2700K color temperature, 82 CRI CF20EL/C/827 120V ...
"Fluorescent Circline lamp, 6"" :CODE SYL-20155"	"Fluorescent Circline lamp, 6"" :CODE SYL-20155" Check Latest Price Fluorescent Circline lamp, 6" outside diameter, Warm White phosphor, 3000K color temperature, 52 CRI, can be operated by rapid start or preheat ballasts FC6T9/WW/RS ...
"Fluorescent Circline lamp, 6"" :CODE SYL-20156"	"Fluorescent Circline lamp, 6"" :CODE SYL-20156" Check Latest Price Fluorescent Circline lamp, 6" outside diameter, Cool White phosphor, 4200K color temperature, 62 CRI, can be operated by rapid start or preheat ballasts FC6T9/CW/RS ...