FXI Water Filtration System, FXI-22, Single, (1) S5-20 prefilter, (1) CTOS-20 cartridge with IsoNet®, reduces chlorine & sediment, outlet pressure gauge, mounting bracket, 30,000 gallons, 3.0 gpm, 0.5 micron, 1/2" inlet, 1/2" outlet, NSF 42 (160-50115)