Express Water 5 Stage Undersink Reverse Osmosis Drinking Water Filtration System - YouTube. Video will open in a new window. The item "Undersink Water Filter System Reverse Osmosis Filtration CLEAR + EXTRA FILTERS" is in sale since Tuesday, July 22, 2014.This item is in the category "Home & Garden\Kitchen, Dining & Bar\Small Kitchen Appliances\Water Filters". The seller is "expresswater" and is located in North Hollywood, California. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Colombia, Costa rica, Dominican republic, Panama, Trinidad and tobago, Guatemala, El salvador, Honduras, Jamaica.