This is a bracket, just a boring bracket. This is the first model I've ever made and I just made it because I wanted to attach my USB Hub to the underside of my desk. The screw holes are of no particular size I just found some that worked. I also didnt scale it to any particular size when creating it, I just resized it to the correct size in Makerware. Basically what I'm saying is I'm not exactly holding my breath for this to get featured or anything, but man if you need a bracket that just happens to be of these proportions, I have you covered.