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Description
Filter for use with: Whole House Filter System with Timer (AO-WH-PREL). Use only certified, genuine A. O. Smith filters for continued contaminant removal and system performance..Longer lasting appliances - whole house filter system designed to reduce sediment from every tap..IAPMO tested and certified to NSF/ANSI standard 42 for materials. 40 micron filtration - reduces sediment visible to the naked eye..Replacements made easy - no plumber necessary. Replace filter every 6 months. Large capacity (4.5") filter is perfect for household sizes 4 or more people..Includes one replacement filter.