Abstract: A weatherstrip for attachment to the body of a vehicle having a flange edge, such as a door, is located at an interface between the flange edge and a movable window. The weatherstrip consists of a longitudinally extending molding formed by an injection molding process which has in cross-section a first and second leg joined together by a web to define a U-shaped and a first channel between the first and second legs. At least one retainer clip may be integrally formed with the molding to define a second channel which is smaller than the first channel for accepting the flange edge.