So it was just in Westland giftware that a recent job was done for this warehouse. You should see the difference in the lighting from the before and after photos. It’s actually stunning what has been accomplished ! They upgraded their metal halide fixtures that used 465 watts each to 4 lamp T5 fixtures that use 220 watts each. The light levels increased 10 fold and the entire warehouse lighting improved dramatically. The payback was 7 months in this case. Can’t you wait to do the same? – California