Therefore, the reputation of the products themselves suffered. Models are now producing very high quality, different. Typically, doors are made from an array of oak, birch, pine, maple, beech and other valuable trees. It is very simple to process some breeds of trees, others are very soft in nature, therefore, you have to make more efforts. The most common, without exaggeration, can be called oak doors. They are the most expensive. Oak – hard and good material, such doors will last a long time.