The Oasis Quick-Change 25 GPD Thin Film Membrane 033664-001 is meant for use on all Oasis Reverse Osmosis water coolers and most new style Oasis point-of-use and under-counter filter systems. This reverse osmosis filter, through the most advanced method of water filtration, gives you the purest drinking water. Water is pushed through the filters fine membrane under pressure so that nothing passes through the membrane except for pure water molecules. The result is a difference you can taste.
Fits the following Tri Palm / Oasis Models:  PDQT1AQK, PDQT1AQKY, PDQT1AQHK, PDQT1AQHKY, PDT1AQK, and PDT1AQHK 
 Features:

• 25 GPD Thin Film Membrane
  
• For use with Oasis RO Units
  

If purchasing the 25 GPD RO Membrane, it will be automaticaly upgraded to the 50 GPD RO Membrane since the 25 GPD Membrane has been discontinued.