Plywood is elementary term for all types of boards composed of glued wooden layers. For all multi-purpose types of boards, typical structure is one of the main characteristics: certain layers are set up to 90 degrees one opposed to another, providing better stability and firmness to the board. Most frequently, they have three layers of veneer, with odd number of layers of veneer. However, an exception comes with four-layered structure, where two medial layers are set in parallel. Basic raw material for production of plywood are logs of beech, birch, and populus. The main advantage of plywood in comparison to other glued boards is in: great firmness in bending, great module of elasticity, and hardness. Standard formats: 2500×1220, 2440×1220, 2300×1220 Thickness: 4 mm, 6 mm, 8 mm, 10 mm, 12 mm, 15 mm, 17 mm, 22 mm Classes: BB/BB, B/BB, BB/B, BB/CC, BB/C, D