Counterframe for retractable sliding door, with rail supporting technical traverse in rooms provided with inter-room ceiling guiding systems to move disabled persons, of the type for plaster or plasterboard, in which: (a) The upper traverse supports the rail that has a partial development with respect to the width of the doorway； wherein said rail is provided with a stop in such a way as to end in correspondence of the crossing of the hanging rail of the guiding inter- room system； (b) The back trolley, with a first part inserted in the profile of the guide rail, the second part of the type suitable to rest with the wheels in correspondence of external side guides of the rail, which face the upper edge of the door panel； (c) Said traverse being suitable to support a portion of overdoor profile that ensures the aesthetic continuity of said upper traverse.
