I found assembly pretty easy. Some of the lids don't detach well leading to tears but that's a small inconvenience for a reasonably priced bunch of boxes.
I've been buying these boxes for 8 years to hold books in them.They have been excellent (5 stars) to use for the past 7 years. In a year's time they have been cheapened. The problems are: 1. putting them together--they rip along the serrated edges when you are tearing them apart to form the sides.2. When you are putting them together the sides are not cut right to comfortably fit standing up inside...they bend when you try to put them in place. 3. The cardboard used is weaker not as strong as they used to be. 4. The price has gone up for a more inferior product.I am so disappointed. They used to be the best boxes to use. They no longer are.