http://tinyurl.com/mf2jadl
18 GPD RO Reverse Osmosis GE Membrane Compatible FX12M w/ Pre & Post Filters
One GE 18 GPD Compatible Membrane.
One CA Ware Brand 5 Micron Compatible Pre Filter
One CA Ware Brand 1 Micron Compatible Post Filter (May use pentek brand instead if run out of stock)