These are great for my garage. These are medium duty I would say. Shelves are particle boards but they can hold decent wait. Support beams in the middle are the reason it can hold some weight. I'm not handy at all but I built 2 of these in like an hour. Super easy to build.
Customer service was A plus. I got 2 and assembled the first one without any issue. 2nd one had broken and bent components. Company sent me a free replacement and told me to keep or trash the broken one. That tells you all lot about the product support, didn't put the customer through the hassle of packing everything up and send back. I would recommend these to anyone with normal medium duty garage shelving.