This Bosch filter has an activated carbon media that is designed to reduce chlorine taste and odor, sediment, lead, mercury, and other impurities from your drinking water. Used on many Bosch refrigerators including the Evolution 500 Series model B20CS50SN, Evolution 800 Series model B20CS80SN, and the EVOLFLTR10 filtration system. For best performance, filter should be changed every 6 months or 400 gallons. Pressure range: 25-125 psi. Temperature range: 33-100 F. Flow Rate: 0.5 gallons per minute.00640565 (AP3961137) replaces 1257074, 640565, AH3478935, EA3478935, PS3478935, PS8729485.