Airstream 1" Black Rub Rail Trim Insert, 50 Foot Roll- 201091Airstream 1" Black Rub Rail Trim Insert, 50 Foot Roll 201091 1" wide replacement vinyl rub rail insert for Airstream trailers used with aluminum extrusion 101388 01. Maximum roll length is 50 feet. Installation Tip: Put the bottom lip into the lower track a foot or so at a time and then pinch the vinyl down enough to slip it into the top track then move on down the line and do a little more. There is no need to try to slide it through the entire track.