APEC Water Essence series FILTER-MAX-ESPH is for ROES-PH75
1st to 3rd stage pre-filters removes sediment, particles, rust, chlorine, taste and odor
4th stage high rejection 75 GPD TFC reverse osmosis membrane removes a wide range of impurities
5th stage standard capacity coconut shell carbon filter removes any last residuals
6th stage 10 inch high purity premium made PH+ alkaline calcium carbonate inline filters with 1/4" quick connect