The Whirlpool WHEERM UltraEase Reverse Osmosis Membrane Replacement Filter X1 is a white 3-stage water filter designed for commercial and household use. Made of membrane and plastic, it is suitable for removing chemicals from water. With a filter life of 12 months, this filter is specifically designed to fit Whirlpool WHER25 reverse osmosis water filtration systems. This product is lightweight at 8.4 oz and compact with dimensions of 2.5 x 2.5 inches, making it easy to handle and install in various settings.