Endurance® Water Filtration System, Endurance® Quad, (1) EC210 Prefilter, (4) SEN Fibredyne® submicron carbon block cartridge, reduces chlorine, taste & odor, (1) 2SR-BW phosphate cartridge For scale reduction, outlet pressure gauge, 200,000 gallons, 15.0 gpm, 0.2 micron, 3/4" inlet, 3/4" outlet, NSF 42 & 53 (EV943732)