The Culligan® P1 2-pack Level 4 Premium Filtration cartridge reduces sediment, rust, scale, dirt, coarse sand, sand fine sand, extra fine sand and silt. The replacement cartridge fits the following models: HF-150A, HF-160, HF-360 and most standard size housings. 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. Use With TV#'s 216912, 529096 & 583328, Level 4 Advanced Filtration.