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 Color/Finish Family: Multiple colors/finishes Diameter (Inches): 5.35 Height (Inches): 12.8 Length (Inches): 5.35 Weight (lbs.): 2.96 Width (Inches): 5.35 Filter Life (Months): 3 Filtration Method: Mechanical filtration Flow Rate (GPM): 4 Lowe's Exclusive: Yes Max Feed Water Temperature (Fahrenheit): 100 Min Feed Water Temperature (Fahrenheit): 40 Number of Filters: 1 Package Contents: Filter housing and housing wrench Package Quantity: 1 Recommended Use: Soft water Reduces Bacteria: No Reduces Chemicals: No Reduces Chlorine Taste and Odor: No Reduces Cysts: No Reduces Iron: No Reduces Lead: No Reduces Mercury: No Reduces Micro-Organisms: No Reduces PFOA/PFOS: No Reduces Pharmaceuticals: No Reduces Sediment: Yes Reduces Turbidity: No Stage: Single-stage Total Dissolved Solids (Percentage): 0 Warranty: 1-year limited CA Residents: Prop 65 Warning(s): No Safety Listing: NSF safety listing UNSPSC: 40161500