In case you want to build your own shelf, or a desk mounted to a wall I have some leftover materials from a pantry project. The two designed ones come from a commercial site Federal Brace. There are a couple chips in the finish on one of them. Sizes: 18.75x3x5 and 22.75x3.25x6.5 Finishes: Black Material Thickness: 0.25" Holes: 6 - 0.26" Straight Holes Carry Capacity: 500 Pounds Each Fasteners Not Included Link here: https://offerup.co/faYXKzQFnY?$deeplink_path=/redirect/ And two Steel angle irons were bought from Metal Depot been custom powder coated locally in Fremont. All in we spent close to 300$ on getting these for the project, and didn't end up needing these.