The boxes are okay; however the part where you have to separate the top from the rest of the box during the assembly process .. is difficult doesn't easily come apart at the perforated lines. For my purposes they were inexpensive and worked for me.
My wife and I were faced with boxing up a large inherited private library which we planned to donate to a nearby public library. We made several purchases of these boxes and have used over seventy of them. They are strong stack well and can be handled easily.