One advantage of fluorescent bulbs is that they last very long and therefore are cost efficient. The brightness of a light bulb is measured in lumen, which in this case is 3 350 lumen.
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Osram L 36 W/840 Cool White
LED Bulbs
Osram 36W T8 Fluorescent Tube 1200mm 4FT Cool White - 517872
Big on Electricals
Osram 36W T8 Fluorescent Tube 1200mm 4FT Cool White - 517872