The CTOS-CK10 is a compatible replacement cartridge for the Cuno® 8000 series filter replacement cartridges. It is a 10” quick-change cartridge that reduces sediment down to 0.5-microns and reduces chlorine, taste & odor at a flow rate of 1.5 gpm for 15,000-gallons. The cartridge includes IsoNet®, OptiPure’s patented scale-inhibiting technology, which delivers consistent protection against the precipitation and accumulation of scale and provides a protective barrier to help guard against corrosion.