Check the listing for details. NU Aqua Platinum Series 1-Year Filter Replacement Set. Condition: New. Listed at 79.95 USD. " This NUAqua filter set includes a one years set of replacement filters except for the membrane for the NU Aqua Platinum Series Reverse Osmosis System. These filters have gone through rigorous development and testing in our lab to provide consistent great tasting, clean and healthy water on demand while maintaining superior performance. High-quality filters not only improve the water produced by your reverse osmosis system it extends the longevity of its components. Effectively removing contaminants early in the filtration process protects fittings, housings, and valves so that your system can keep running with little to no maintenance. HydraCoil utilizes a specialty technology manufacturing process for up to 50% cleaner water than comparable systems. Our carbon filters provide a higher absorption rate due to the molecular structure of the pores becoming more permeable which allows even the smallest of particulates to be efficiently removed from your water. This allows the system to provide up to a 99% rejection rate of 1000+ contaminants such as arsenic, chlorine, fluoride, bacteria, and lead. Fits most standard under sink reverse osmosis systems that use 10” x 2.5” filter sizes. For most under sink RO systems, this is the most common industry standard filter size Package Includes: 2x High capacity spun polypropylene sediment filter 2x HydraCoil Technology granular activated carbon filter 2x HydrCoil Technology coconut carbon block filter 2x T33 granular activated coconut shell carbon post filter ( Does not include RO membrane) "