A.O. Smith AO-WH-PRE Single-Stage 4-GPM Mechanical Filtration Whole House Water Filtration System

The A. O. Smith Household Water Filtration System reduces sand, sediment and rust from your main water supply. Longer lasting appliances- whole house filter system designed to reduce sediment from every tap Built-in pressure relief button allows for easier filter changes Whole house filter system can be used as a stand-alone system or with additional A. O. Smith filtration systems Certified to reduce sediment, scale, dirt and rust in your water, appliances and plumbing fixtures Universal 2.5-in replacement filter cartridges sold separately (AO-WH-PRE-RCP2, AO-WH-PRE-RP2, AO-WH-PRE-RC2, AO-WH-PRE-R2, AO-WH-PREV-R2, AO-WH-PRE-RPP2) System is NSF Certified to Standards 42 Includes filter housing, housing wrench and all parts necessary for installation Perfect for a household size of 1-4 people Limited 1-year warranty