I bought two.  I had to remove the bottom hinges on each cabinet, but I was able to get both inserts to fit.  It was a little difficult to get the first insert in.  But once that one was finished, it was easier adding the second.  Let me tell you, these inserts are sturdy, they're made of good strong wood.  There are three screws each in the front and back, so the unit won't move.  Each drawer holds a lot of stuff and it's easy to organize items.  The drawers slide out making it easy to reach items in the back.  This was such a great solution and it was relatively inexpensive.  I'm so glad I found them.