Item Type: Pool Filter Cartridge_x000D_Material: Polyurethane, non woven fabric_x000D_Size:_x000D_Outer Diameter: Approx.78mm/3.1in_x000D_Inner Diameter: Approx.28mm/1.1in_x000D_Height: Approx.90mm/3.5in_x000D_Suitable for: For Intex E, filter pump pool, swimming pool, spa pool 18 Pcs in Set: This set contains 8 pcs filters for your use, using a unique trefoil filter fabric structure, with strong filtration ability 2Efficient Removal: This spa filter effectively removes hair, leaves, dust, sediment, sand and more, provide you with a safe leisure time 3Water Cleaning: This filter helps the pool remove buildup and debris by collecting trash, ensuring that the pool water is clean and clear 4Durable and Reusable: This pool filter adopts durable and practical polyester material, easy to clean, makes the filter reusable for long term use 5Wide Application: This replacement filter cartridge is suitable for Intex E, pump pools, swimming pools, spa pools, etc.8 x_x000D__x000D_PoolFilterCartridge