These boxes are very sturdy and as easy to assemble as can be. I was unable to tell from the description ("Letter") that the boxes are humongous. Instead of 12x12x16 the size of these boxes is more like 12x12x36. When filled with paper it takes two normal people to lift a box. The description of the box conceals the actual size of the boxes in this package. The boxes will be easier to lift if not filled with office papers or books; lighter-weight items such as cloth or clothing would make the filled boxes easier to lift.
I have been using these boxes for over 10 years and there was a problem with this year's perforations where the box top is removed. Several ended up pulling parts of the cardboard box itself with the removal of the top. Still work just not very attractive.
Reinforced bottom don't have to tape them together has handles perfect size for items too heavy for larger containers easy to label price can't be beat!
These boxes seem to be a good value for their price and I was able to put them together very easily. Only thing lacking is a rating of how many pounds they hold. I am using them for heavy books so will be careful will not be stacking more than two boxes.