The 3M Cuno CFS441 is the correct replacement filter for the following water filtration systems:
The 3M Cuno CFS441 Scale Inhibitor Filter Cartridge is a replacement water filter cartridge for the 3M DP Series dual port water filter systems. This carbon block water filter operates as a scale inhibitor and can also reduce the taste and odor of chlorine from your water. This scale inhibitor filter cartridge has a flow rate of up to 6 GPM (gallons per minute).
3M Cuno CFS441 Scale Inhibitor Filter Cartridge specifications: