OSI-10-2C Replacement Filter Cartridges, (2) quick-disconnect cartridges, reduces sediment, chlorine taste & odor, HydroBlend™ /ScaleStick™ scale inhibitor, 1.65 gpm flow rate (each), 10,000 gallon capacity (each), 30-125 PSI working pressure, 35-100°F operating temperature, for use with OSI-10-2K filter systems