Deluxe Reverse Osmosis System 150 GPD Retrofit KitIsopure Water Retrofit Kit Deluxe Reverse Osmosis System 150 GPD Retrofit Kit One time upgrade to a high flow TFC membrane system with minimal ongoing maintenance 150 GPD Output TFC Membrane 2 3 Year Cycle WHY IT WORKS A smarter approach to RO system maintenance High Flow TFC Membrane 150 gallon per day thin film composite membrane delivers faster production rates than standard 50 75 GPD units without sacrificing rejection performance One Purchase,