Wanted an extremely simple bracket to hold my ATX supply under my Lack enclosure. Most i saw were way too much for what i wanted. I needed simple. Print two, and rotate them to fit opposite sides of your supply. The lip will keep it in place on both ends. I don't remember my infill, but they're small and fast, so you can experiment if your first one doesn't come out well. I usually print at 20%. Print flat on its side - the lip should be on the table and you can print without supports.