Design requires separating sections at perforations. Not all perforations went through enough to tear accurately so the box would not fold properly. Use scissors or box cutter to cut accurately for best set up.
Great product. A good size that doesn't get too heavy due to it's compact size. Will continue to use them as needed for extra storage. Great for stacking in a closet and getting seasonal or craft stuff organized.
I have always loved these boxes-the size is perfect for office storage and transfer. I also use them at home for transfers and storage. I can fill them and still lift/carry-and you can stack 8-10 of them in a small footprint. This past 6 months-I have seen a decline in quality-the perforations are so poorly done-you need to use a sharp tool to rescore-or they will rip when you try to assemble them. I am a retired banker and have used 1000's of them-so I can assemble them in my sleep-but now I need to have a knife to do so.