The Heavy Duty Interlocking Shelf arrived quickly, and was a breeze to assemble I used a soft Mallet to tap the support legs into place. The structure seems very sturdy overall but one of the legs had a defect where it looks as if one of the corners was melted ‍♀️, However, I don’t think it’s an issue and it assembled just fine. The product seems very strong BUT it is also light weight which is a big plus for me because I am not physically strong and can’t move heavy things around. I’m am very pleased with the results!