Use in Place of the GE Merlin Tankless RO Reverse Osmosis System. This Commercial Grade Construction Using Food Grade Stainless Steel is designed for commercial and/or Residential Use. Its Tankless Operation or Stainless Steel 4.4 Gallon Tank for Highest Flow Rates and High Demand usage with a 400 GPD Gallons Per Day High Production Capacity.  Filters and membranes are pre-installed so it is ready for use as soon as you get it.