Nature2 Spa Stick Mineral Sanitizer | W20750 Pool Basketball & Volleyball The Pleatco Advanced PFF50P4 is

The Pleatco Advanced PFF50P4 is a precision-fit replacement filter cartridge engineered for the Freeflow Spas Legend

420 & 520 sq

collar not included) Full Grid Width 11" Partial Grid Length 36" Partial Grid Width 9" Collar Configuration Open slot (2 notches) Material High-grade DE filter fabric with reinforced seaming Note from Unicel: Collar has open slot (2 notches)

Most Hayward and Pentair 24 sq

Nature2 Spa Stick Mineral Sanitizer | W20750 Pool Basketball & Volleyball The Pleatco Advanced PFF50P4 isSpa naturally using the proven power of minerals. Nature2 Spa is a low maintenance alternative to chlorine* that uses the antimicrobial power of minerals to give you cleaner, clearer water while providing round the clock algae control* even when your pump is not running**. A convenient and simple sanitizing solution, Nature2 Spa drastically reduces chemical use, helping to keep pH in a neutral range and prolonging the life of your equipment.