Most bi folding doors come in different types of configuration. Aluminium systems companies have procedures that suit many types of application.You have to decide before you even build your extension how your door configuration is going to be. This is very crucial given that different door sizes of various weights will fit onto different panels available. Furthermore, having a door that may be too heavy can greatly have an effect on the performance of how the bifold door opens and shuts. Again, if the doors are manufactured to be too narrow, then it implies that the panels could turn out to be bulky when one is attempting to fold or stack it away at the other end.