Hayward Pro Series Plus Side Mount :: S311SX and S360SX
Incorporating the many advanced features of HaywardFs Pro Series side-mount sand filter, the Pro Series Plus satisfies the requirements of the most demanding installations, including pools installed with in-floor cleaning systems, spas, fountains or solar heating systems. Its spherical tank design evenly distributes the high pressure and stress associated with these applications, resulting in greater strength and longer life.
So, for crystal clear water with only minimal care, pool owners choose Pro Series.

Standard Product Features of the Pro Series Plus Side Mount Hayward Filters

++ Top diffuser ensures even distribution of water over the top of the sand media bed
++ All internal piping is 2-IN to give smooth, free-flowing performance
++ Manual air relief purges any trapped air during operation of the filter system
++ Unitized, corrosion-proof, spherical filter tank molded of rugged, colorfast reinforced thermoplastic for maximum strength and longer life
++ Optional valve and coupling selections for plumbing ease and versatility
++ Precision engineered umbrella-fold self cleaning laterals for balanced flow and backwashing, plus easy serviceability
++ NEW Large pressure sand/water drain for rapid winterizing or servicing