oceanicwater store Oceanic Under Sink Water FilterSystem - 2 stage filtration -Clear HousingsThis premium see-through Clear Housing offers many advantages. Without opening the housing, you can easily monitor the filter's condition.You will get an idea about your water's quality by looking at the color and speed of contaminant buildup on the filter cartridge.Although the 2 filters normally last 12 months on most city water sources, they may need to be replaced sooner if your water source has heavy sediments and other contaminants.So how do you know when to replace the filters?Just look at the stage-1 filter, when it turns from white to medium or dark brown, then you know it's time to replace the filters.DRINKING WATER FILTERS SYSTEM 2 STAGE1st STAGE- SEDIMENT FILTER 5 MICRONSediment filter to trap particles, including rust and calcium carbonate2nd STAGE -CTO CARBON BLOCK FILTERCarbon filters are most effective at removingchlorine,sediment,andvolatile organic compounds(VOCs) from water.COMES WITH FAUCET & FEED VALVE, WRENCH, TUBING &ALL FILTERS INCLUDED.EASY INSTALL.