I've only used one box but it was hard to put together. I used scissors and my hands to separate the dotted lines but I needed a box cutter. The instructions weren't clear. I needed packing tape to reinforce a cut I shouldn't have made.
Perforation at seams rips easily. But for a basic box it’s just OK. Not suitable for long term storage. Kind of cheaply made. This is probably the worst review I have ever done of a Staples product. I’m usually 100% satisfied.
These are excellent boxes for file storage. I bought these to pack up stuff while my house was painted. They are not designed for heavy objects. They can be easily unfolded and stored flat.