Feature: 1. Good Features: Made of PP polyester fiber cloth, it has good mechanical properties and sunlight and high temperature resistance, and is not immune to strong acid and alkali. 2. Folded Design: Because of its folded design, it provides a larger filter area, prolongs the life of the filter, reduces the number of filter element renewals. It is an economical filter product. 3. Strong Ability to Absorb Dirt: End cap injection molding, high strength, thickened filter membrane, stronger ability to absorb dirt. 4. Good End Cap Sealing: The filter media, center rod, and end caps are glued together as an integral part to ensure good end cap sealing. 5. Scope of Application: Pool filter cartridge can be used in tap water filtration, swimming pools, SPA pools, fishponds, etc. Size is about 18.5x18cm / 7.3x7.1in. Specification: Item Type: Filter Element for AF25 Material: PP Polyester Fiber Cloth Color: As Pictures Shown Weight: Approx. 4kg / 8.8lb Product Size: Approx. 18.5x18cm / 7.3x7.1inCompatible Models: for AF25 Filter Application: Can Be Used in Tap Water Filtration, Swimming Pools, SPA Pools, Fishponds, etc.. Package List: 4 x AF25 Filter Element