Replacement filter package for this system is Amazon item B07GV5B93M
1" NPT Brass Inlet / Outlet Ports <> ALL FILTERS INCLUDED <> Triple Heavy-duty Construction with a Pressure Gauge after each Filter Stage <> Complete Well Water Filtration System with Standard Size 4.5 x 20" Big Blue Filters for Large Home/Commercial
1st Stage: 20 Micron String Wound Sediment Filter. For particles such as sand, dirt, silt, Iron and rust. To remove these particles, it allows a better performance for the following Carbon Block filter. The String Wound Sediment filter offers a longer cartridge life, higher flow rate, greater dirt holding capacity, lower pressure drop and more efficient when compared to other sediment filters.
2nd Stage: 5 Micron Carbon Block Filter. Removes chlorine, bad taste, odor, organic solvents and chemicals that contribute to bad taste and odor... Also a large variety of contaminants linked to cancer, like pesticides, herbicides, insecticides, Trihalomethanes, Benzene VOC's, PCB's, MTBE's along with hundreds of other chemicals and contaminants that may be present in our water.
3rd Stage: 1 Micron Sediment Filter. For particles such as sand, dirt, silt, and rust. Precise filtration down to 1 micron.