Specification AgeRangeDescription : All Brand : Sunluway BulletPoint1 : 【 Versatile Choice】This replacement for Nature2 Express Mineral Cartridge W28175 fits all Express units. Suitable for above-ground or in-ground pools up to 30,000 gallons. Works well with Nature2 Express vessels, and Express IG / AG Cartridge. Replace for OEM part: W28175, W20171, W20080, W26775. BulletPoint2 : 【Lower ChIorine & Healthier Water】The Mineral purification technology leverages a blend of silver and copper minerals to provide continuous sanitization as water passes through the cartridge.The Mineral Cartridge effectively reduces chlorine demand by up to 50%, resulting in less potential for red eyes, itchy skin, and unpleasant odors. Also helps maintain a balanced pH level in the pool, enhancing water clarity and comfort. BulletPoint3 : 【Lower Maintenance】Each W28175 mineral cartridge reduce the level of chlorine to just 0.5 ppm and lasts up to six months, offering a cost-effective and sustainable alternative to traditional chemical treatments. Lowering the need for harsh chemicals makes overall pool maintenance simpler and less frequent. BulletPoint4 : 【Fast and Easy to Install】This replacement for Nature2 cartridge is manufactured with OEM specification ensuring perfect fitment for Nature2 Express Mineral Sanitizers for pool. Just simply thread the mineral cartridge into the clamp assembly and set the date reminder. No modification is required. BulletPoint5 : 【Long-Term Savings】Using a pool mineral cartridge can significantly enhance the overall swimming experience while improving water quality and reducing impact on the environment and body. If you're not 100% satisfied with our replacement for Nature2 Express Mineral Cartridge W28175 , simply return it for a full refund in 30 days. Premium Support & 12 Months Warranty. Color : Blue CompatibleDevices : iPhone 11 CompatiblePhoneModels : iPhone 11 CustomerPackageType : Wallet book case FinishType : Metallic FormFactor : Wallet IncludedComponents : Card Holder IncludedComponents1 : Lanyard IncludedComponents2 : Kickstand IncludedComponents3 : Card Holder ItemName : Replacement for Nature2 Express Mineral Cartridge W28175 for Pool Sanitizers, for In-Ground & above-Ground Pools up to 30,000 Gallons, Replace for W28175, W20171, W20080, W26775 ItemPackageDimensions_Height : 19.5072 centimeters ItemPackageDimensions_Length : 12.0904 centimeters ItemPackageDimensions_Width : 12.4968 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : swimming-pool-cartridge-filters Manufacturer : Sunluway Material : PU TPU Material1 : Faux Leather Material2 : Leather ModelName : Wallet Case for iPhone 11 ModelNumber : W28175 NumberOfBoxes : 1 NumberOfItems : 1 PartNumber : W28175, W20171, W20080, W26775 Pattern : Solid ProductDescription : Replacement for Nature2 Express Mineral Cartridge W28175 for Pool Sanitizers, for In-Ground & above-Ground Pools up to 30,000 Gallons, Replace for W28175, W20171, W20080, W26775 ProductSiteLaunchDate : 2022-04-28T14:18:22.260Z Style : Flip Cover SubjectCharacter : Solid SupplierDeclaredDgHzRegulation : not_applicable TargetGender : unisex Theme : No Theme UnitCount : 1 WarrantyDescription : 12 Months WaterResistanceLevel : waterproof