Bought two shower kits, one 32", one 36". I put the larger on together first and wondered why the walls had no real support and were inches away from the drywall behind. Then I put the 32" together and the instructions had been added to - including additional wood cross pieces that took up some of that empty space between the acrylic panels and the drywall. The small shower instruction made so much more sense - I wish I had dome that one first!