Four-foot 22W T8
This four-foot T8 (same pins at T12) replaces either the F32 T8 or F40 (or F34) T12. 192 efficient LEDs yield 2200 lumens of daylight color with only 22W. Yes, that's a superior 100 lumens per watt. Just bypass the fluorescent ballast and you're ready for bright, efficient LED light.