The iSpring RO400EU Tankless Reverse Osmosis Water Filter System is a high-quality and efficient water filtration solution that can filter up to 400 gallons of water per day. Made from durable plastic, this unit is designed for under sink installation and is compatible with iSpring brand models FPCT400 and MRO400EU. It effectively removes contaminants such as chlorine, fluoride, lead, arsenic, asbestos, calcium, sodium, and sediments to provide clean and safe drinking water. The system comes with features a filter replacement cartridge lifespan of 400 gallons per day, ensuring long-lasting and reliable filtration performance.