Laminated Veneer Lumber or LVL is engineered lumber that is usually used for beams, headers, rim joists, and material used on forming edges. It is far more advantageous than conventional lumber. It is a very recent innovation. It is created using multiple layers of thin wood bonded together with heavy-duty glue. Since it is manufactured under a controlled factory environment, it is stronger, straighter, and more uniform than conventional lumber. Plywood has been used widely since the early 20th century but the LVL come into widespread use near the mid-1980s.