I was nervous about purchasing this product because there are many selections to choose from and I had to rely on ratings and reviews. I am using these to store my 12 x 12 cardstock paper and I am extremely happy!I bought 6 total and put then in 2 columns stacked 3 high. The front opening enables me to access paper easily regardless of stack or column position. Size is perfect leaving enough extra space to easily store and remove paper. The assembly was easy and the top frame and side latches help keep units stay securely together. If you stack units be sure to put the frame on top level. I missed that and the top units started to come apart at the corners. Once I added the frame and latched it - problem was solved!The paper is extremely heavy therefore the locking wheels makes it is easy to move units. The wheel lock allows me to secure units in one spot without movement. I just started to use the units so I hope the quality is long term. For me, this is a fantastic solution that saves space, makes it easy to access, looks neat, clean and modern, and despite heavy paper - units remain extremely stable and are not wobbly.