JR Products Extended Rain Gutter Spouts. These one-piece extended rain gutter spouts are the longest on the market and will keep your RV free of black streaks by directing the water away from the sidewalls. The eye pleasing design moves the water volume faster and further away than any other rain gutter spouts. Made of durable plastic with UV inhibitors for years of use. Spouts have a one-piece design so you don't have to use clip-ons. They attach to your RV under the existing aluminum track and never need to be removed. Rigid, Package of 2.