Sectional door with panel aligning abutment

Sectional door comprising a plurality of panels joined together in an articulated manner by hinges having a horizontal axis of rotation, said panels having an inner front wall and an outer front wall situated opposite to each other and joined at their top and bottom ends by corresponding top and bottom shaped edges, said edges comprising respectively a convex portion and a concave portion having a matching profile joined to the outer front wall, wherein the bottom shaped edge and the top shaped edge of the panels comprise respectively a lug and an abutment flank extending at the ends of the inner front wall, and in that the lug of an upper panel in the door abuts on the bearing flank of an underlying panel in the closed condition of the door, co-operating therewith for the vertical alignment of the panels in this condition, wherein both arms of the hinges are provided with holes for fixing screws, which have the shape of a slot elongated in the vertical direction with reference to the closed condition of the door so that relative positions of the panels may be adjusted while vertically resting on one another.