AO Smith Membrane & Remineralizer Replacements for AO-US-RO-4000 Includes two filters and one

Includes two filters and one membrane

206110 Membrane

The smallest filter with a separate faucet that provides high quality water purification at an affordable price

Replacements made easy - no plumber necessary

401 & P473

AO Smith Membrane & Remineralizer Replacements for AO-US-RO-4000 Includes two filters and oneReplacement RO Membrane & Remineralizer for AO Smith 4 Stage Reverse Osmosis (AO US RO 4000) Product Features: Replacement RO Membrane & Remineralizer for: The Clean Water Filter with RO Boost (AO US RO 4000). Use only certified, genuine AO Smith replacement filters for continued contaminant removal and system performance. Replacements made easy no plumber necessary. Reverse Osmosis reduces up to 99% of harmful contaminants including lead, fluoride,