The PENTAIR Reverse Osmosis Drinking Water System Filter Replacement Membrane is a 4-stage system. These 4-stages include a 20-micron sediment pre-filter, a granular activated carbon (GAC) pre-filter, reverse osmosis membrane and a granular activated carbon post-filter. The membrane design reduces the amount of water down the drain so it fills up the reserve tank quicker. For best results replace every 18 months.
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 gallon per day
Easy to change with no tools required
18-month filter life
Filter life in gallons is a approximate amount, due to variables in water quality