This high quality Genuine OEM Bosch UltraClarity® Pro Water Filter Cartridge (11032531) is considered a chemical and mechanical filter that operates with a flow rate of 0.55 GPM (gallons per minute) and within a standard pressure range of 30 PSI - 125 PSI and a standard tempurature range of 35°F - 100°F. The White UltraClarity® Pro Water Filter Cartridge is tested and certified by NSF International against NSF/ANSI Standards 42, 53, and 401 to reduce contaminaints and is effective in the reduction of Chloramines, Chlorine, Lead, Sediments, Pharmaceuticals, Cysts, Mercury, Asbestos, and Turbidity. This high quality UltraClarity® Pro Water Filter Cartridge has a maximum capacity of 250 gallons and must be replaced every 6 months or as soon as indicated by your refrigeration appliance to ensure that the water filter functions properly. Please be aware that it is recommended to see the user manual for your refrigeration appliance for information on installation and proper maintenance.