1 in. x 100 ft. PVC Schedule 40 White Ultra Flexible PipeUltra flex flexible PVC pipe is specifically designed for use in the installation of pools and spas, ultraFlex PVC pipe is NSF certified and IAPMO approved Cannot use the flexible pvc pipe in dead head pressure situations. Head pressure (due to gravity) up to it's rated working pressure is okay. When the system is pressurized there must be flow in the pipe Ultra flex PVC pipe is a true schedule 40 PVC pipe uses standard schedule 40 fittings and PVC