Waterdrop WD-G2CF Filter, Replacement for WD-G2-W, WD-G2-B, WD-G2P600-W Reverse Osmosis System,12-Month Lifetime: Waterdrop WD G2 W, WD G2 B, WD G2P600 W, WD G2MNR W Reverse Osmosis System : The filter provides you with 12 months or 1,100 gallons of clean filtered water. To get the best filtered water, please replace the filter according to the replacement cycle : The 2 in 1 front filtration stage effectively reduces sand, rust, particulates, suspended solids, and other impurities, providing you with clean and pure water : The filter uses a superior natural