APR-4N1 - 1-Micron Multi Sectional Super 4-in-1 Sediment Cartridge Series

Each stage of the cartridge filters a unique size of sediment.  Because the Super 4-in-1 Sediment Cartridge is multi sectional with gradual filtration linked together by a patent-pending proprietary transition process, it can last longer than any other sediment cartridge in the market with similar and even larger pores!  Water travels radially and enters the cartridge through FOUR SEPARATE FILTER ZONES (gradients) of specified micron sizes based on testing for enhanced filtration. Because the APR-4N1 gradually filters ALL sizes of sediment from big to small, each layer only has to filter its designated size sediment.  This is different from a single section cartridge.  See all Replacement Water Filters Microns are a unit of measurement. They refer to the size of the sediment passing through the cartridge.  The smaller the micron the smaller the sediment. A micron is a unit of length that is one millionth of a meter or 10-6 m. One micron is 1/26,000 of an inch. Our proprietary APR-4N1