HIGH EFFICIENCY ENCAPSULATED REVERSE OSMOSIS MEMBRANE produces great tasting, high quality water with less waste waterINCLUDED drain line flow control and permeate check valveDOUBLE THE RECOVERY over standard reverse osmosis elements with comparable rejection performanceNSF INTERNATIONAL tested and certified for your peace of mind50 GALLON PER DAY (189 LPD) flow rate with 96% nominal rejection