The Culligan® P5 2-pack Level 4 Premium Filtration cartridge reduces sediment, rust, scale, dirt, coarse sand, sand fine sand, extra fine sand and silt. The filter is recommended for use with city and well water supplies. The cartridge life is up to 2 months or 8,000 gallons. Cartridge change reminder sticker included. The replacement cartridge fits the following models: HF-150A, HF-160, HF-360 and most standard size housings. For Use With TV#'s 216912, 529096 & 583328.