Windows have to perform a wide range of functions: They create light-filled spaces and provide a view of the outdoors. At the same time they should keep out heat, cold and noise as well as protect against burglary. Whatever their function, windows must be able to be integrated into any building architecture, and that means they require a high degree of flexibility in terms of colour and design. We will show you how you can combine different requirements and what you should pay attention to when choosing your aluminium windows.