The Vevor pool filter cartridge 4-pack is designed for spa and hot tub filtration with 50-micron precision for cleaner, clearer water. Each cartridge provides 80 sq ft of filtration area for a total of 320 sq ft per set. Made with trilobal pleated filtration fiber, these cartridges are built for strong dirt-holding performance, efficient water flow, and easy rinsing for repeated use. They are compatible with Pentair CCP320 and several comparable replacement models. Reinforced construction helps support durability in routine pool and spa maintenance.