This carbon block filter is an alternative/compatible replacement filter for legacy Amway Water Treatment Systems. Specifications Filter Media: Coconut shell carbon Rating: 0.5 micron Filter Life: up to 1,250 gallons or one year Dimensions: 4.0″ D x 7.0″ H Compatible with the following systems: A101 E84, E-84 E-85 E-9225 E-9230 E-9231 E-9233 E-9325 Gen IV N5593 Amway Aries Quixtar Compatible/Comparable SKU Numbers: Amway E-0085 Amway E-0085R Quixtar A101 Aries A101 Micron Rating: 0.5 Flow Rate: 5.0 GPM Filter Life: 12 month / 1250 Gallons Connection: 3/8″ FPT Made from NSF Standard 42 material Not Compatible with: Amway Compact Systems eSpring Filtration System