The GE SmartWater FXHSC water filter has a pleated paper construction, GE FXHSC heavy duty water filters reduce sand, sediment and rust, The GE FXHSC filter cartridge is resistant to chemicals and corrosion, The GE SmartWater FXHSC is designed for purity, bacteria resistance, and chemical resistance, Replace the GE FXHSC heavy duty sediment water filter cartridge every 3 months or when flow rate is significantly decreased