The Stokk E1 Countertop Reverse Osmosis System RO Replacement Filter(RE1-RO) is a high-quality water filter designed specifically for household use. Made of durable plastic, this filter utilizes reverse osmosis filtration method to provide clean and fresh water. Compatible with Stokk E1/T1 Lite models, this sealed filter ensures easy installation and reliable performance for your kitchen or dining area. With this replacement filter, you can enjoy safe and refreshing water every time.