Pool Filter Cartridge Sponge replacement filter foam for pool and spa pumps Key benefits Reliable filtration: Captures hair, sand, dust, leaves, and other common debris to help keep pool and spa water cleaner between deep cleanings. Durable and reusable: Made from sponge material that resists tearing and maintains shape under normal use, so it can be used many times before replacement is needed. Easy maintenance: Wash with warm soapy water and rinse thoroughly to restore filtration performance quickly and simply. Cost effective: Reusable design reduces the frequency of replacements and lowers ongoing maintenance effort. Product details Item type: Pool filter cartridge sponge Material: Sponge Category: Filter cotton, filter Gross weight: Approx. 62 g 2.2 oz Size: Height 8 cm 3.1 in; inner diameter 5.2 cm 2.0 in Use: Pool washing and pump filtration Package contents: 4 x pool filter cartridge sponge Performance and fit Designed to fit cartridge housings with an inner diameter of approximately 5.2 cm and a height of approximately 8 cm. Good elasticity and flexibility allow the sponge to conform to the filter cavity while trapping debris without collapsing. Simple care routine restores filtration ability and extends service life. Typical applications worn or clogged cartridge sponges in above ground and small inground pool pump filters that match the stated dimensions. Use as a prefilter in spa circulation systems to reduce solids entering the main pump and prolong pump life. Keep spare sponges on hand for seasonal pool openings, routine maintenance, or when cleaning filters during heavy debris periods. Care instructions Rinse with warm soapy water to remove trapped debris. Rinse thoroughly with clean water before reinstalling. Inspect periodically for signs of wear or damage and when torn or no longer effective. This set provides four replacement sponges sized and specified for pool washing and cartridge filtration needs.