Get any micron rated String Wound Big Blue Sediment Filter 4.5" x 20".
These string wound sediment filters have a great efficiency rating and a high dirt/sand loading capacity. Inexpensive solution to remove sediment from your water supply. Suitable for 20 inch big blue style whole house filter housings. There are different micron ratings for you to choose from. Works on a variety of applications, including residential/commercial with well and municipal water supplies.