This 1/8 x 12 x 12 (4 PLY) Baltic Birch Plywood is of premium quality. Its metric measurements have been converted to English equivalents, as is the case with all aircraft-grade plywood. Though we aim to provide the highest quality possible, the rough-cut nature makes it difficult to guarantee that each sheet is perfectly flat and straight. Additionally, exact sizes and freedom from saw blade chipping cannot be assured.