Conserv® Reverse Osmosis System, Conserv® 75S, (1) 4FC5 Fibredyne® submicron carbon block cartridge, reduces chlorine, taste & odor, (1) 4CC calcium carbonate cartridge, (1) GRO-75EN RO cartridge, removes 95% of TDS, (1) onboard RO water storage tank, blending valve, .5 gpm, 3/8" inlet, 3/8" outlet, NSF 42 & 58, cUL Listed (EV997600)