In the design of the Finnish windows, the wings are divided into two sets, which are connected by specialized fittings, and by the method of opening the window corresponds to the usual one — on ourselves or from itself on loops. They are made of natural wood in combination with glued timber, compacted along the contour in order to prevent drafts in the places of adjustment of the wings. If you are faced with the question «The better to glaze the balcony?», Then unequivocally plastic windows.