This is a Home Master TMAFC-ERP Artesian Full Contact Undersink Reverse Osmosis Water System that provides clean and great-tasting water for your home. It is compatible with Aqua Optima Evolve and is perfect for use in the kitchen, dining area, or any small space in your home.The system uses reverse osmosis filtration method to remove impurities and ensure that your water is pure and safe to drink. The Home Master TMAFC-ERP is an open box item that is brand new and has never been used. It comes with all the necessary components for installation and is easy to set up. This undersink water filtration system is ideal for those who want to enjoy great-tasting and clean water without worrying about the condition of the item.