The Culligan® CW-MF Sediment Filter removes scale, rust particles, sand, dirt, and silt from your drinking water. The package contains 2 filters and has a life of up to 3 Months or 12,000 Gallons. The filter has a Level 1, 30 Micron rating. The CW-MF filter fits Culligan models HF-150 and HF-360. Use With TV#'s: 216912, 529096 & 583328.