Whirlpool WHEERM Reverse Osmosis Replacement Membrane &mdash; Compatible With WHAPSRO, WHAROS5 & WHER25 Filtration Systems | Reduces Metals For Contaminant-Free, Great Tasting Water | 1-2 Year Lifespan Adaptable Design: The WHEERM Replacement Membrane fits the WHAPSRO, WHAROS5 and WHER25 Reverse Osmosis Filtration Systems. Works with the WHEERF Reverse Osmosis Replacement Filter Sets Safer Water For You And Your Family: Our WHEERM Replacement Membrane fits our most advanced filtration systems  This membrane is NSF certified to remove the 15 individual contaminants most commonly found in home water Fresh Tasting Water: The Reverse Osmosis Replacement Membrane cleans your water by removing lead, chlorine, sediment, cysts and other harmful chemicals that produce distasteful and smelly odors Long Life For Reduced Costs: The WHEERM membrane lasts up to 2 years  you may want to change it sooner depending on your water conditions Easy Change Cartridge Design: UltraEase Filter Replacement allows you to change membranes in seconds without turning off your water