Culligan P5 Level 4 Premium Sediment Filtration Replacement Cartridge, 2pk: * Fits models HF-150A, HF-160 and HF-360 * 5 micron spun polypropylene cartridge * Reduces: sediment, rust, scale, dirt, coarse sand, sand, fine sand, extra fine sand and silt * Recommended for use with city and well water supplies * Cartridge life is up to 2 months or 8,000 gallons * Cartridge change reminder sticker included * Model# P5