The purpose of this study was to show how saw classes affect the quality of the lumber and how the company can develop their quality management based the results of the study. The study shows that Kantning is the most profitable class to drive, but it requires several investments. A cutting system is one of the investments required to be able to develop the quality management. That investment will result in that higher quality can be sorted from the current lower qualities by being able to cut defective parts. The result also shows that an implementation of an intermediate quality is not worth it unless an investment in a cutting system takes place. An implementation of an intermediate quality requires investments such as a scanner system.