Keep your countertop water filter performing at its best with this convenient replacement filter. Long-life performance filters up to 48 gallons of tap water for an average household use of 3 months. Fits filter system models: •WCH-1000 •WCH-1500 ; GF-80 filter reduces contaminants including (for pH level 6.5): Lead 98.7% Chlorine (taste and odor) 97.5% Mercury 92.8% Benzene 84.1% Cadmium 96.6% Copper 85.0% Tetrachloroethylene 92.5% Toluene 89.8% ; Dimensions: 4.0 wide x 3.0 high.