Window and door systems are simply windows and doors for buildings. Depending on the requirements, they can fulfill basic functions, but can also include modern color schemes, large glazing, excellent thermal and acoustic insulation, or specialized functionality and automation. Due to their complexity, projects are individually developed to meet all customer requirements. The appearance and functionality are largely influenced by the profiles used, the type of glass, and the hardware. A well-customized aluminum product guarantees a room that will function properly for years to come.