QC7I Water Filtration System, QC7I PF Twin 7FC5-S, (1) EC210 prefilter, (2) 7FC5-S Fibredyne® carbon block cartridges, reduces sediment, chlorine, taste & odor, inhibits scale, 50,000 gallons capacity, 5.0 gpm flow rate, 5 micron, inlet water shut-off valve, outlet pressure gauge, flush valve, 3/4" inlet/outlet connections, NSF 42, (EV932862)