The bottom shelf is about 11.5" tall, almost 13" wide, and 15.5" deep. The top shelf is almost 9.5" tall, almost 13" wide, and 13" deep. So no, you can't put a mid or full sized computer case on a shelf. I didn't read the instructions and I messed up the top of it. DOH! Other than that, packaged well, easy to assemble, light weight, and sturdy. Color matches other espresso finishes that I own.