General description Tested and certified by WQA according to NSF/ANSI 42, this replacement water filter for Ultra WF3CB refrigerators uses high-grade coconut carbon block to effectively remove over 99% of potentially harmful contaminants from your water. Technical specifications Model: WF3CB Temperature range: 1-38°C (34-100°F) Flow rate: 0.75 GPM (1.9 LPM) Pressure: 30-125 PSI Capacity: 250 gallons Replacement cycle: 6 months Compatibility and accessories AP4567491 PS3412266 242069601 242086201 706465 85075SGP001 Other information