GE Lighting 15987 8 Watt 12 Inch Fluorescent Light Bulb Bi Pin Cool White: Fluorescent Linear Tubular Light Bulbs (043168981125-2)
GE Lighting 5108 CW T5 8-Watt Cool White Lamp, Fluorescent at SkyGeek.com
Bluex Bulbs 4 Pack T5 12 Inch LED F8T5CW LED Replacement F8T5 LED 5 Watts 530 Lumens Cool White 4100k F8 T5 Pack of 4 Bulbs in the LED Tube Light Bulbs department at Lowes.com
GE GENERAL ELECTRIC 8 watt 12" Cool White Fluorescent Light Bulb F8T5 £5.98 - PicClick UK