This case was exactly what I was looking for and I've searched a lot. It's just the perfect size. I cut a 1.5" hole in the lid and installed a 100w LED inside with a heatsink wired with aircraft grade electrical connectors. My completed project is a photo studio lamp that provides continuous daylight quality light with very little heat generation. I considered other materials like plastic or sheet metal but finally settled on this one because it's easy to work with and durable. Will be buying more of this soon and I highly recommend it.