Open the box and put in in the office and you're done. The only think I wish was it to be legal size but the legal wasn't on sale. I bought some inserts and turned the leagle files the other way leaving me some space in the back for extra stuff. I then used the enclosed stop brakets to keep the leagle files from sliding.
I have the four drawers of this cabinet filled with heavy magnetic sheets mounted on cardboard each holding metal craft dies. I have nearly 900 sets of dies so the weight in each drawer is substantial. So far there are fifty hanging folders in each drawer but the top drawer is the only one where all 50 folders are full. The cabinet has held up to this hasn't tipped hasn't collapsed yet so I'm happy. And the price was right. The guy who delivered it the day after I ordered was wonderful and helped me strip off the packing to check for dents. The cabinet was in perfect shape. I looked at a LOT of file cabinets before I selected this one and I made the right choice.