Living Room, Medium Hardwood Floor, Sofa, Recessed Lighting, Shelves, Rug Floor, and End Tables The fireplace wall, a Resolution: 4 signature, is made of 14-gauge hot-rolled steel panels with storage components in one-eighth welded steel. On one side is a pivoting privacy panel that allows the guest wing to be closed off. Art attaches to the metal with magnets.  Photo 2 of 14 in 7 Efficient Prefabs That Prove the Power of Modular Design from An Unconventional Prefab on Fishers Island