Object of the present innovation is a new embodiment of sliding doors for pieces of furniture, particularly of the kind with two shutters and reduced height, having coplanar closing and opening by overlapping of the shutters. Main feature of this invention is to provide support and translation of each shutter (1) by means of a respective clamp (2) placed on the edge of the outer side, said clamp (2) being linked to a pair of little carriages (3a and 3b) that can slide transversally with respect to the same shutter (1), because they are supported and guided by a respective carriage (4a and 4b), which in turn can slide longitudinally along the edge of an opening V, it being led by a rail (59) and control tracks (53 - 54 and 58), besides being engaged by a loose roller (35) that constrains it into a couple of longitudinal cams or grooves.