3M Purification, DP390, (5624102) 3M™ Water Filtration Products Dual Port Water Filtration System, with shut-off valve, 15.0 gpm, 0.2 micron, 162,000 gallons capacity, includes: (1) built-in pressure gauge, (1) outlet check valve, mounting brackets, (3) cartridge filters and (1) scale inhibition cartridge, reduces bacteria, sediment, chlorine taste & odor, cyst, NSF certified