QTCR-2 Water Filter System, Twin, (2) CTO-QCR2 activated carbon cartridge, reduces chlorine & sediment, outlet pressure gauge, water shut-off valve, bypass valve, mounting bracket, chloramine reduction, 20,000 gallons, 3.4 gpm, 5 micron, 1/2" inlet, 1/2" outlet, NSF 42 (170-52132)