Assembly for conveying goods

The structure (1) has a foldable side wall (5) that is arranged at lateral loading opening (4) in upper region of an upper rail (6) that is movable between fully deployed position and fully folded position. A portion (13) of lateral end of structure adjacent to an end portion (9) of upper rail is linearly movable between fully retracted position and fully extended position in the longitudinal direction of upper rail. The portion of end portion extends to upper rail in fully retracted position and over lateral protruding end of structure in fully extended position.