FIELD: construction, in particular, slabbed constructions of hollow sections. SUBSTANCE: coupling member for slabbed construction, for installation between two window-panes for formation of at least one slab crossing on the main hollow section; at least two aligned transverse sections are fitted at a preset angle, they envelop the main section with an overlap at least by one stud for coupling the main hollow section to both transverse sections, one stud passes through the main section and is rigidly coupled to both hollow sections. It is made with a calibrated orifice for the stud and has a spline that passes through the calibrated orifice, essentially in parallel with it. EFFECT: rigid, resistant to turning and twisting, coupling between hollow sections. 27 cl, 11 dwg
