So a while ago, I posted on fluorescent under cabinet lights for my laundry room. But now that I’m ready to buy the fixtures, I have a question. There is a 33 inch model, and a 42 inch, but if I bought two 33 inch I would fill basically the entire length underneath. But if I bought one 42 inch, I would have maybe 6 to 8 inch’s of unlit space on each side. Is it better to get two smaller fixtures, or one bigger one?

Here I would say two smaller ones. The efficiency will be slightly lower, but as long as you have enough lamps it won't matter.

Then that’s what we are doing!