FIELD: construction.
SUBSTANCE: frame of window or door includes one main plastic section bar that substantially forms inner side of frame and has several hollow chambers, and one metal section bar forming external side of frame. Panel or glasing is fixed on inner side by chamber of thrust sealing of the main section bar and by metal section bar at external side. Metal section bar forming outer side has at least one hollow chamber that provides for rigidity.
EFFECT: invention will make it possible to increase torsional rigidity of structure.
23 cl, 4 dwg
