These barriers provide an immovable hurdle for the water jump. Both have a pull pin design for easy height adjustability. The 740134 includes ground sleeves for in ground installation and is compatible with our F510 water jump form. The 740144 includes mounting plates for surface anchoring and is compatible with our F500 water jump form.Don't add weight to the steeplechase water beam with expensive steel or aluminum water jump seals. Mesh water jump seals allow for your choice of color and easier (lighter) use.Barrier Seals also available in aluminum.