Use inside Nos.HF-360, HF-160, or HF-150 filter housings to extend life of major appliances or provide clean, fresh drinking water by reducing medium sand/dirt/silt, coarse sand, scale and rust particles (20 nominal micron rating). Will also fit Omni, Sears, Fulflo, Teledyne Water Pik, Ace, Flotec, Honeywell, General Electric, American Plumber, and most standard size water filters. Pleated construction for increased efficiency and well-water applications. 4-month/16,000-gallon life depending on usage andwater conditions. NSF International tested and certified.