Need those for storage paper works. Don’t need to go to the store to pick them up. That is the best part!Short and sweet, this is an excellent product!It was finally time to get better organized, and I figured one of these boxes would probably just hold a year's worth of financial records (and, I was right, these were the perfect size), so, I ordered up two of the four-packs, and I now have each year in its own box for the required "past 7 years" of records to keep on hand, and can easily rotate in the newest year, and shred the oldest year, annually now, using these boxes over and over each year. I created a changeable label for the lid, so this is a very affordable one time buy for a long term need.The best part? No more office clutter!These are super easy to build -- they just fold into shape basically, with clear instructions and a bit of applied intuition -- and they are very sturdy. Lid "locks" on, thanks to an included extra fold in the lid, and the boxes are able to be stacked. They are very strong, easy to carry thanks to built in handles and, in general, is just everything I was wanting for archived paperwork.I've used some other brands over the years, for other office needs, and have been disappointed because they have turned out to be flimsy and not very well constructed, so I was on searching for these, since I knew of them by reputation, and of course Amazon has them because Amazon has everything! Go Amazon!Extremely happy with this purchase and I'm sure they will last a very long time.Highly recommend!Happiness is reality less expectations. Bankers Box R-KIVE Heavy-Duty Storage Boxes, FastFold, Lift-Off Lid, Letter/Legal, 4 Pack (0072506) are top of the line. If your files and folders merit quality storage and protection, look no further. Over the years, I have purchased several different brands of portable storage boxes. Simply put, these are the best quality and even look business professional, and not to be confused with the flimsy light or medium weight storage boxes that can't hold up over time or easily collapse if stacked more than a couple high. Highly recommend the Bankers Box R-KIVE Heavy-Duty Storage Boxes, FastFold, Lift-Off Lid, Letter/Legal, 4 Pack (0072506) … ❤ ｡◕‿◕｡ ☀ ツThe boxes arrived promptly via Amazon Prime. The directions for assembly were printed on the box via illustrations that made assembly a snap. (Took about 3 minutes to assemble box and then lid.) The boxes are sturdy and attractive. Highly recommend purchase of these boxes.Although these boxes are expensive compared to other file storage boxes, for those special items, they are the best. They can handle the weight of stacked storage too.I liked everything about this box. The design, the quality and durability. I highly recommend for a professional, uniform look to an office space.Very sturdy board, love it!I get these because my cats like playing in them. But they are good and durable for moving and storage too.