u/AdministrativeUnit10

I recently moved and my pantry is 47 inches wide and it cant be changed. I bought a 29in pax unit to replace the shelves. My plan had been to get the mid unit add on which is 13 inches and would leave around 4-6 inches of space and I was just going to use it as ladder storage. But then I thought maybe I could get a 19 inch unit and cut it down an inch. I know the back piece is already attached and you fold it apart and put in the braces. But has anyone tried this? And i know i wont be able to use drawers. Im fine with just shelves, and trimming those too.