Abstract: Structure (10) for a glass-enclosed chamber (9) formed of a frame (11) consisting of four channel-shaped pieces (15, 16, 17, 18), angular joins (20) and an angular connection (30) and comprising a blind (80) carried by a box (50) inside the glass-enclosed chamber (9) worked by a device with an electric motor, inside said box (50) and electrically connected to an electric socket (60) situated at one end of said box (50), said socket (60) being shaped so as to permit conjunction, due to matching of the top of the box (50) with the upper channel (18) of the frame (11), to an electric plug (38) with pins-terminals (40-42) for connection by electric wiring to a device for electric feed and control outside the glass-enclosed chamber (9), said plug (38) being placed in the angular connection (30) of the frame (15-18), situated at said end of the box (50).