- New
021-85202-16 is a black aluminum corner molding from AP Products, designed for exterior corner and roof-edge applications on recreational vehicles. Measuring 16 ft long, it helps cover and seal joints between exterior panels to reduce the risk of water intrusion. Its long-leg profile provides a finished appearance, while the center channel accommodates a separate vinyl screw-cover insert. Mounting screws, sealing tape, caulking and the insert are sold separately. Verify the profile dimensions and installation requirements before fitting.