The Parker 22-10320-025-0 is the correct replacement filter cartridge for the following housings:
The Parker PolyFlow 20" Filter Cartridge 2.5 Micron is a replacement water filter cartridge that fits 20" standard housings. This Polyflow filter features a 2.5 micron rating for superior dirt holding capacity and the improvement of drinking water taste. This Polyflow filter cartridge has a 13.5 gpm (gallons per minute) flow rate and measures 20".
This sediment reduction filter is pleated to ensure the highest possible dirt-loading capacity and on-stream life. In addition, this pleated water filter cartridge is constructed with durable polypropylene for longer filter life. With a proper 20 inch water filter cartridge you can guarantee safe and clean drinking water in your home.
Parker PolyFlow 20" Filter Cartridge 2.5 Micron specifications: