Review on YUMORE L Brackets Heavy Duty, 5X3X1.8 Inch Stainless Steel Shelf Brackets Wall Mounted For Floating Shelves Industrial Farmhouse, Includes Hardware, Pack Of 4 by Jason Adams

I used these as support brackets for an 8x8 utility enclosure so I could mount the 3-inch box to be flush with the wall sheetrock. The brackets didn't have any manufacturing burrs, did not lose shape under medium stress, and the pre-drilled holes were recessed for allowing a snug install. In my case, I was using stainless nuts and bolts to secure the box, so had to drill the holes slightly larger. While the ones I've installed will never bee seen again, I think the appearance of the brackets is perfectly acceptable for an exposed usage such as open shelving.