Abstract: The present invention relates to a device for feeding a planar section, e.g. a wall element, in relation to one or more working stations, e.g. nailing and/or hole making stations, the planar section having an upper portion (2) and a lower portion (1) and intermediate pieces (3) inteconnecting the upper portion (2) with the lower portion (1), a first conveyor (23) being intended for the upper portion (1) or the lower portion (2), a second conveyor (24) being intended for other portion, extending in parallel with the first conveyor (23) and being switchable for increasing or decreasing the distance between the conveyors (23, 24) and both of the conveyors (23, 24) being disposed to cooperate with carriers (21, 22) displaceable therealong for displacement of the portions (1, 2, 3) along the conveyors (23, 24).