A device for a wire cable duct (18) has a profiled part having a first wing (2), termed horizontal wing, and at least one second wing (4), termed vertical wing, extending substantially perpendicularly to the first wing on one side thereof. The device includes: at least one longitudinal housing (6) intended to receive a warp wire (20) formed on the lower face (10) of the horizontal wing, that is to say the face opposed to the second wing; transverse cutouts (8), formed with a predetermined pitch corresponding to the pitch of the transverse weft wires (22), all along the horizontal wing (2), the transverse cutouts (8) extending over the whole width of the horizontal wing and continuing into the region of the vertical wings (4); and at least one tongue (12) extending longitudinally from a transverse edge (14) of each cutout (8) over part of the width of the cutout.