This Whirlpool 2 pack water filter is designed to purify your household water supply. Made of plastic material, this compatible water filter is suitable for Whirlpool models WHAROS5, WHAPSRO, and WHER25. The filtration method used in this product is reverse osmosis, which effectively removes contaminants such as chlorine, sediment, cysts, lead, chemicals, and dissolved solids. This water filter has a number of features that make it a great addition to your home. With its easy installation process, you can save both time and money. It is also compatible with many Whirlpool models, making it a versatile option for a variety of households.