Material: The filter medium is made of PP polyester fiber cloth, which has good mechanical and thermal properties, high temperature resistance, and is resistant to strong acids. Keep Pool Water Clean: This swimming pool filter cartridge helps maintain clear pool water and works efficiently with the pool pump. Washable Pleated Fabric: Durable, washable pleated fabric retains strength even when loaded with debris. Filter cartridge size: 204 x 104 mm (8.0 x 4.1 in). High Flow Core Design: The high flow core supports the filter structure, enhances water flow rate, and reduces strain on the pump. Easy to Clean: Clean as needed by scrubbing with a filter cleaning tool, then rinse under strong water pressure to remove trapped particles. Replace in Time: For optimal performance, clean the filter cartridge weekly and replace it every two weeks. Specifications: Item Type: Pool Filter Cartridge Material: PP and Filter Cloth Color: As shown in pictures Weight: Approx. 435 g (15.3 oz) Product Size: Approx. 204 x 104 mm (8.0 x 4.1 in) Application: Suitable for hot tubs, spas, and children's pools Package List: 2 x Filter Cartridge