Aqua-Pure 3M Aqua-Pure Whole House Sanitary Quick Change Replacement Water Filter AP917HD-S, For Aqua-Pure System AP904, Reduces Sediment, Chlorine Taste and Odor, and ScaleDESIGNED FOR USE WITH 3M Aqua Pure Whole House Sanitary Quick Change Water Filter System AP904 EASY TO REPLACE: Sanitary Quick Change (SQC) design allows for fast and easy change outs of this filter without having to contact the filter media or the need for a filter wrench CLEARLY GREAT WATER: This whole house water filter reduces sediment, chlorine taste and odor as well as scale helping to increase the life of hot water heaters and appliances