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Lightbulbs too, even a 5.5 watt 470lm lightbulb has an F.

To be fair, 85 lumens per watt isn’t very good these days, or even compared to T8 CFL lamps (60 lumens per watt).

Efficient LED fixtures are putting out ~130 lumens per watt these days, some LED highbays are pushing 175-200 lumens per watt.