The Tostem LW window contributes to a pleasant domestic environment that is full of light. What is more, it offers very good heat insulation. The aesthetic aspects of it are restrained, for example, the locking system is concealed within the frame. Thanks to the way the window has been made, the view through it is in no way compromised. In a clever manner, it links the interior with the exterior, thus giving a feeling of oneness. The window can be equipped with accessories that protect the interior from the sun or prevent people from outside looking in.