1956 - 1956 Ford F-350 Door Weatherstrip Seal Kit, Left and Right, 2 Piece Set. This seal mounts on the door with weatherstrip adhesive glue (not included). This is a pair for the left and right side. Our weatherstrip has been hollowed out so the door can close correctly unlike the solid sponge type. Our product is made from the original specs and from high quality ozone resistant materials.