The lip on the shelves makes it difficul t(almost impossible) to access paper easily -at the very least lip forces the storage of less paper per shelf. Lipless 12X12 are much easier to use.
These 8.5x11 paper trays appear to be well made and they stack easily. The lip on the sides hold the paper in well and are perfect for labeling. I would have preferred to have the style with no lip because the lip makes it is a little more difficult to remove the paper, but that is the only style offered in the 8.5x11. In the 12x12 you have the choice of both styles. That to me is a major flaw in the product line. I gave it 3 stars because of that choice limitation. Otherwise I would rate it a 5.
I had cabinets built and could not find trays to hold paper that weren't flimsy and too wide -- I needed to have access from the 8-1/2 width, not the long side. These are very sturdy, they fit the 8-1/2 wide paper without a lot of excess, wasted space on either side of the paper -- they are perfect! I have 20 more ordered!
Stackable paper trays make it so much easier to organize and see each tray of colored paper. They also make it easy to pull out paper of choice. Great item to have for your organized scraproom!! I am so pleased with these stackable paper trays!!
I have two sets of these in the 12x12 size AND the rolling base AND the drawer inserts - outstanding products!! I've had them now for almost 2 years and they have held up beautifully - VERY sturdy. I have my stack of 20 on the rolling base, which makes rearranging my work space easy and makes it super easy to put the whole stack right where I want it when I scrap. I highly recommend the product - it is well worth the money - takes up little space and provides a huge amount of storage in a small space.