AMAZON RETURN – OPEN BOX. This is an open box Amazon return. Unit appears used but still in great condition. Very clean but has some water marks and chrome casing. Please review pics for best condition description. IMPROVES QUALITY OF HOME DRINKING WATER – The RONAQUA utilizes Ultra-Violet light to battle against waterborne pathogens while adding nothing to the water except for UV light. CHEMICAL-FREE WATER TREATMENT – It’s the UV ray technology adapted to this system, no harmful chemicals need to be added. UV is an environmentally friendly alternative to chlorine disinfection and has no disinfection byproducts. POWERFUL, DEPENDABLE & OPERATIONAL – a 12GPM power is powerful enough to sanitize the whole house water, including drinking and cleaning usage. This UV water treatment system continuously works night and day, 24/7, consistently keeping water safe. ECONOMICAL & EFFECTIVE – only UV lamp and quartz sleeve would be replaced annually for this UV water purification system, less maintenance cost. Low electrical needed to save on the energy bill. EASY INSTALLATION & OPERATION – it would take you less time on installation as the compact design and simple components. Water flows through the system without need for holding tank or reaction times.