QL3B Water Filtration System, QL3B 4FC5, (1) 4FC5 Fibredyne® carbon block cartridge, reduces sediment, chlorine, taste & odor, 15,000 gallons capacity, 2.5 gpm flow rate, 5 micron, inlet water shut-off valve, 3/8" inlet/outlet FNPT connections, NSF 42, (EV925972)