The WF1CB Frigidaire comparable refrigerator water filter replacement model, the Tier1 RWF1030, fits the same models as the Frigidaire WFCB and WF1CB. For up to six months, this filter will reduce up to 99% of lead, cysts and more before these contaminants make their way into your favorite glass or favorite beverage. Each filter lasts about six months, based on typical home water usage. Continues to serve only the best tasting water and pay only the best looking price! Order this refrigerator water filter, comparable to the WFCB and WF1CB by Frigidaire, by 4pm CST today for same day shipping.