Spa Filter Cartridge for Unicel 6473-164 / Pleatco PGS25P4Maintain crystal-clear and hygienic water in your pool or spa with this premium replacement filter cartridge. Designed with advanced filtration technology, this filter provides exceptional performance, removing debris and contaminants to ensure a safe and relaxing experience for you and your family.CompatibilityThis Finest-Filters cartridge is a high-quality compatible replacement for the following models:Pleatco: PGS25P4Unicel: 4CH-24Filbur: FC-0131Other: 6473-164, 20254-238, SD-00004, PAS-1217, 12519, Gatsby 25Advanced Filtration TechnologyTrilobal Fabric: Constructed from high-density trilobal fabric, this filter provides a massive surface area and superior sediment-holding capacity without compromising water flow.Extended Service Life: The unique trilobal structure allows for the easy release of impurities during cleaning, ensuring a longer functional lifespan.Chemical Resistant: Features reinforced end caps that are highly resistant to chlorine and common pool/spa chemicals, providing superior durability and reliability.SpecificationsLength: 9 3/4"Outside Diameter: 4 5/8"Top Style: HandleBottom Style: 1 1/2" MPT (Male Pipe Thread)Package Includes: 1 Filter Cartridge.