Sylvania GTE 6",8",12",16" Circline Bulbs20 watt (6 inch), 22 watt (8 inch), 32 watt (12 inch), and 40 watt (16 inch).Listing is for your choice of one lot of:QTY 1 X 6" BulbsorQTY 1 X 8" BulbsorQTY 1 X 12" BulbsorQTY 1 X 16" BulbsPlease choose your bulb choice from the drop-down menu above.Diameter: 6 inchesManufacturer: SylvaniaManufacturer Part #: 20156Manufacturer Desc.: FC6T9/CW/RSUPC Code: 046135201561Light Output: 750 lumensEnergy Used: 20 wattsBulb Type: T9Base Type: 4-PinColor / Finish: Cool WhiteColor Temperature: 4,200KDiameter: 8 inchesManufacturer: SylvaniaManufacturer Part #: 20148Manufacturer Desc.: FC8T9/CW/RSUPC Code: 046135201486Light Output: 1,050 lumensEnergy Used: 22 wattsBulb Type: T9Base Type: 4-PinColor / Finish: Cool WhiteColor Temperature: 4,200KDiameter: 12 inchesManufacturer: SylvaniaManufacturer Part #: 20037Manufacturer Desc.: FC12T9/WW/RSUPC Code: 046135200373Light Output: 1,950 lumensEnergy Used: 32 wattsBulb Type: T9Base Type: 4-PinColor / Finish: Soft WhiteColor Temperature: 3,000KDiameter: 16 inchesManufacturer: SylvaniaManufacturer Part #: 20059Manufacturer Desc.: FC16T9/CW/RSUPC Code: 046135200595Light Output: 2,500 lumensEnergy Used: 40 wattsBulb Type: T9Base Type: 4-PinColor / Finish: Cool WhiteColor Temperature: 4,200KDiameter: 6 inchesManufacturer: PhilipsManufacturer Part #: 812983Manufacturer Desc.: FC6T9/CWUPC Code: 046677249823Light Output: 800lumensEnergy Used: 20 wattsBulb Type: T9Base Type: 4-PinColor / Finish: Cool WhiteColor Temperature: 4100KDiameter: 8 inchesManufacturer: PhilipsManufacturer Part #: FC8T9/WWManufacturer Desc.:FC8T9/WWLight Output: 1050 lumensEnergy Used: 22 wattsBulb Type: T9Base Type: 4-PinColor / Finish: Warm WhiteColor Temperature: 3000K