We added an attached garage to our house 2 years ago. It's 24' by 24-30 (It's at an angle to the house) and has 11' ceilings. I ordered 2 bulb 4' LED fixtures from PrimeLights.com If I remember correctly we installed 6 of them. My wife does crafts and it lights up the garage nicely and isn't any shadow areas, but that's mainly due to light placement. At the time the lights were very reasonable. My father in law has since built a 40x40 and I told him about them, but the price has went up a good bit since I bought them (But what hasn't). He ended up going with 8' LED lights from his electrician and paid a pretty penny for them. I think I emailed PrimeLights about my garage size and layout and they gave me their recommendation. I'm very pleased with them for the price.