AO Smith Reverse Osmosis Water Filter Membrane Replacement - Replacement for AOS-HERO RO Filtration Systems - Filters to Reduce Chlorine & Other Contaminants from Drinking Water - AOS-HERO-S2

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About This Clean, Healthy Water - Reduce up to 99% of 90 contaminants including chlorine, chloramine, lead, pesticides, PFOA/PFOS, cysts, microplastics, and more from water in your house. Advanced Filtration - Replacement membrane indepently tested to NSF standards 42, 53, 58, and 401. Use only certified, genuine AO Smith replacement filter cartridge for continued contaminant removal and system performance. Stage 2 reverse osmosis replacement membrane for AOS-HERO-CHR (B0CCQF4QZX) systems. Replace every 12 months or 730 gallons whichever comes first. Overview Material : Plastic Product Dimensions : 3.25"D x 3.25"W x 12.9"H Item Weight : 1.8 Pounds External Testing Certification : NSF Product Benefits : Reduces TDS Show more