Our wood planks with bark feature sanded finished surfaces with bark along both sides.The wood planks are kiln dried only, and not chemically treated in any way. The planks are perfect to use for signs and wood burning, or as charger plates. Each plank is approximately .75" thick. This is a natural item, so measurements may vary as each one is unique. Photo by Sang An/ Martha Stewart Living A Woodland Christmas at Martha's House.