QT1+CR Water Filter System, Single, (1) CTO-Q10 activated carbon cartridge, reduces chlorine & sediment, (1) CTO-QCR catalytic carbon cartridge, reduces chloramine, outlet pressure gauge, water shut-off valve, bypass valve, mounting bracket, 20,000 gallons, 2.5 gpm, 1/2" inlet, 1/2" outlet, NSF 42 (170-52080)