This is a master thesis written by undersigned students at Mälardalens University. This report consists of a project where the goal is to develop products for the mounting fixtures for windows and exterior doors to the company Husmuttern AB. The company Husmuttern AB is working to develop modular housing for constructions with the help of fixtures. The idea behind the usage of fixtures is that anyone even those with no previous experience should be able to build the parts for the finished house. This will be achieved by using an interactive screen with instructions that are easy to understand, even if you do not know the language. This project has dealt with everything regarding the development of walls with windows and exterior doors....