I have a small bedroom with a deep (not walkin) closet, so I bought this to put inside my closet and store my extra shirts and things.  When assembling, the frame has a front and a back.  The back rails kick up to keep the box from sliding through.  I didn't follow the instructions or pay attention to that and had to re-do the frame correctly.  I purchased the gray chest and it was perfect - I could easily maneuver it into my closet and it does store a lot.  Very  happy with it.