APEC WATER SYSTEMS 5 Stage 50 GPD Reverse Osmosis RO Water Filter System ROES-50. This item is brand new in a open box never been used. This item is in the category "Home & Garden\Kitchen, Dining & Bar\Small Kitchen Appliances\Water Purification\Water Filters". The seller is "scratchmadd" and is located in this country: US. This item can be shipped worldwide.