Bell 05408 Fluorescent Lamp 6W G5
With this particular bulb you get a cool white light. As for the brightness, this light bulb clocks in at 260 lumen.
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From Amazon
Bell 6W T5 Halophosphor Mini Tube - 4000K, 225mm - Pack of 1 - 260 Lumens
£5.25
Lamps 2U Direct
6 watt Cool White T5 Fluorescent Tube
£1.86
swiftelectrical
Bell 6W T5 Halophosphor Mini Tube - 4000K, 225MM
£5.00
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