Gina, I haven't use the Trofast units I went with wire shelves so I could adjust them more as needed. But I have seen them used here before so I did a search. One of the parties who used them had done a complete stip down of the trailer and appears to have made the closet slightly bigger to fit them. Another party at the Thread called 1972 Boler - Interior re-do
used them - the photo of them is on the 1st page of the thread and indicates further on in the thread that "I did end up drilling new holes to space them a little closer as well cut it down a bit."