Pelican Water 104863 Replacement Membrane Reverse Osmosis Drinking Water System Filter, White Membrane design reduces water loss by up to 50% Replacement is quick and easy with 4-stages built into 1 filter and no tools required Unit is long lasting, no replacement for up to 18 months Quickly fill reserve tank, up to 50 Gal. per day This is a Pelican Water replacement part Part Number 104863