These compatible filters fit the following standard Pelican Water systems: PC600/PC1000, NS3/NS6, PSE1800/PSE2000, and WF4/WF8, WF6/WF10, and Trojan sediment filter systems The compatible 10 in. 5 Micron Sediment Filter Replacements (4-Pack) is recommended for homes with heavy sediment. These filters fit the following standard Pelican Water systems: PC600/PC1000, NS3/NS6, PSE1800/PSE2000, and WF4/WF8, WF6/WF10, and Trojan sediment filter systems. Helps protect your new filter system and your home appliances from the damaging effects of sediment (dirt and debris) build up. The sediment in city or well water can clog faucets, damage appliances and even change the taste of your drinking water. The pre-filter system filters out particles as small as 5 microns in size. Lengthens life of filter system and appliances Filters down to 20 times smaller than the diameter of a human hair. Each filter is effective for approximately 6-9 months depending on use. The brand names and logos are the registered trademarks of their respective owners. Any use of the Pelican brand name or model designation for this product is made solely for purposes of demonstrating compatibility."