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Titan Water Pro 3 STAGE Replacement Filter Sets (2PC) REVERSE OSMOSIS ALKALINE/IONIZER NEGATIVE ORP WATER SYSTEM.
1. 2"x10" Alkaline Ionizer Filter (white housing) 1/4" FNPT
1. 2"x10" GAC Carbon Filter (white housing) 1/4" FNPT
Recommend change every 1000 Gallon or 1 Year whichever
comes first.