All oak frames are made from quartersawn white oak and cherry frames are made from american black cherry. All frames are 7/8" thick. The side rails are approximately 2" wide. We hand select the most highly grained wood that we can find and strive for the highest quality of craftsmanship in our construction. Our stains are custom made and the frames are finished in a 4 step process that ends with a paste wax finish that will last throughout the ages. Each frame has a keyed slot on the back for flush wall hanging which hangs more professionally than with the wire method. We also include hardware for hanging and metal tile clips to hold your tile in place. Standard Tile frames are made to accommodate the full size listed. Example: The tile frame in a 6x6 size will accomodate a tile a full 6 inches square and up to 5/8 of an inch thick.