The WHIRLPOOL 2-Pack Reverse Osmosis Water Filters WHEERF is a set of two white water filters designed specifically for Whirlpool brand water purification systems. Made of plastic, these filters utilize a reverse osmosis filtration method to effectively remove contaminants such as chlorine, sediment, cysts, lead, chemicals, and dissolved solids from your tap water. Suitable for household use, these filters are compatible with models such as Whirlpool WHAROS5, WHAPSRO, and WHER25, providing clean and safe water for you and your family.