The Rainsoft 1227867 is the correct replacement for the following water filter cartridge:
The Rainsoft 1227867 Replacement Water Filter is ideal for use with well water. This Rainsoft water filter removes extra fine sand, dirt, silt, rust, and scale particles from your household water. This sediment water filter measures 2 3/8 inches x 9 7/8 inches. This 10 inch water filter should be replaced every 2 months.