I just aquired a 18 foot pool with top resin stabilizer rails and these are brittle with 5 broken pieces. The age/manufacture and model are unknown. The part is embossed with TOP HAUT. Please see photos.[attachment=1:37cy5l65]Top rail (1).jpg[/attachment:37cy5l65][attachment=2:37cy5l65]Top rail.jpg[/attachment:37cy5l65][attachment=0:37cy5l65]Top rail (2).jpg[/attachment:37cy5l65]