The Watts Premier 105321 Hollow Fiber Ultrafiltration Membrane uses a membrane filtration process that pushes water through its semi permeable membrane using standard home water pressure. The suspended particles are unable to pass through the 0.2 micron membrane leaving clean water without removing dissolved minerals.

Features:

• Fits the Watts Premier Filter-Pure UF-3 filtration system
• Does not remove dissolved minerals
• Replace every 12 months
• Micron Rating: 0.2 micron

NOTE: This filter will NOT fit the Watts 1/4 turn Kwik Change Filter System.