I took a couple of scraps of wood and drilled a hole in them the size of my dowel rod. I think it was 1/2 inch. I have delivered this and can't find the exact measurements. (I did write them down) I will add them later if I come across them.
I added some molding around the front.
I had a scrap of bead board so I used that for the back. Hard board or Luann would be just as good.