ATWFS 5 Stage Reverse Osmosis RO Water Filters Cartridge Replacement Set with 75 GPD Membrane

Description: 1st Stage: 1 Micron pp Polypropylene Sediment Filter, 2.5" x 9 7/8" Replace every 6~9 months; 2nd Stage: UDF GAC Coconut Shell Carbon Filter, 2.5" x 9 7/8" Replace every 6~9 months or lasts 2500 gallons; 3rd Stage: CTO Carbon Block Filter, 2.5" x 9 7/8" Replace every 6~9 months or lasts 2500 gallons; 4th Stage: 75 GPD (75 Gallon per Day) Reverse Osmosis Membrane. Replace every 12~24 months; 5th Stage: T33 GAC Post Filter, 2" x 10" Replace every 6~12 months or lasts 2500 gallons.