- New
021-56202-16 is an AP Products aluminum insert gutter rail designed for recreational vehicles. Measuring 16 feet long, 7/8 inch wide and 1-1/2 inches high, this black rail helps divert rainwater away from RV doors and windows. The insert-style channel accepts a vinyl insert for covering mounting screws. The aluminum construction is suitable for RV exterior trim and gutter applications. The vinyl insert, screws, sealing tape and caulking are not included with the rail.