This is a simple laptop stand. The slot on the STL is 16mm wide and 55mm deep. It works well for my 2016 MacBook Pro. The Fusion model is parameterized so its easy to adjust if you have Fusion 360. 23mm worked well for a 15" Dell XPS.

I got the best results by printing it on its side (with supports). Printing it vertically uses far more support material and leaves an awful finish on the bottom.