The Frigidaire/Electrolux WF3CB - Pure Source 3 is a great way to keep your refrigerator working in a good condition. This refrigerator filter needs replacement every nine months as old refrigerator filter cartridges can induce a smell and bad taste in drinking water. Older cartridges might leak contaminants and bacteria in the water, making it unfit for drinking. With Frigidaire/Electrolux WF3CB - Pure Source 3, you will be provided with up to 200 gallons of clean, treated water. It operates at a pressure of 30 psi to 100 psi, at a temperature range of 33 degrees to 100 degrees Fahrenheit. It measures 4-1/8 inches in length x 1-7/8 inches in diameter. It has a rated service flow of 0.50 gallons per minute. It is tested and certified to NSF/ANSI Standards 42 and 53 for the reduction of claims.