Nature2 W29500 Mineral Cartridge Replacement Fits Cartridge Filter Sku: JAN-W29500-CIN91 This is a brand new part comes with a full manufacturer warranty!!! This sale transaction is for only this part number: W29500. Nature2's patented technology uses minerals to kill bacteria and control algae for up to six months. This process of reducing bacteria and algae also decreases the amount of harsh chemicals used to keep your pool water balanced. In fact, using by Nature2 you can reduce the level of chlorine to just 0.5 ppm (1/2 part per million) Features: Mineral cartridge fits most cartridge filters Destroys bacteria and controls algae using natural minerals Reduces potential for stinging eyes, skin irritation, and unpleasant odors Will not harm pool equipment or stain pool Helps stabilize pH levels TERMS OF SALE: If, after receiving this item you discover that it was not the one you wanted, simply return it for a full refund within 14 days. You will heave to pay for the return shipping charges. Refund is void if you have installed, used or damaged the item in any way. Item must be returned with its original box, packing materials and instructions. Payment via PayPal must be received within 3 days of transaction and prior to shipping. SHIPPING:Shipping charge will be based upon location. Please use the shipping calculator or request a shipping quote. International buyers: Customs fees, duties, taxes, tariffs other fees are your responsibility. Arrival time will depend on your location. If you have any questions, feel free to ask. Thank you for visiting!