The supports are long steel bars that go through the shelves and into the studs in the wall. We predrilled holes for them before we tiled. We used oak planks seamed together to make a solid wood shelf." I love the hanging coffee mugs.
Love the pull-out drying rack beneath the shelf, the hanging ironing board and using glass containers to hold laundry soap and products. Laundry room of my dreams. Pathetic, I know, that I dream of well-organized & spacious laundry rooms.