Feature: 1. Premium Material: The filter medium is made of pp polyester fiber cloth, which has good mechanical properties and solar energy properties, high temperature resistance, and is not affected by strong acid. 2. Keep Pool Water Clean: Swimming pool filter cartridge can keep the pool water clear and work with the pool pump to provide excellent performance. 3. Washable Pleated Fabric: Durable and washable pleated fabric that retains strength even when loaded with sediment. Filter cartridge size is 204x104mm / 8.0x4.1oz. 4. High Flow Core Design: Our high flow core is designed to support the filter while providing flow rate and while reducing wear on the pump. 5. Easy to Clean: It is esy to clean when needed, scrub with filter cleaning tool, then wash under strong water pressure to remove loose particles from filter cloth. 6. Replace in Time: For maximum efficiency, it is recommended to clean the filter cartridges weekly and replace with a new filter every two weeks. Specification: Item Type: Pool Filter Cartridge Material: PP and Filter Cloth Color: As Pictures Shown Weight: Approx. 435g / 15.3oz Product Size: Approx. 204x104mm / 8.0x4.1in Application: Suitable for Hot Tubs, Spas, Children's Pools, etc.. Package List: 2 x Filter Cartridge