The CW-F 10-Micron Cord Wound Sediment Replacement Cartridge 2PK by Culligan is a set of two water filter cartridges designed for household use. Made in the United States, these white cartridges are compatible with Aqua Optima brand water filters and are suitable for removing sediment contaminants. With a single-stage filtration method, these cartridges are designed to provide clean and safe water for your home.