This 3-stage reverse osmosis unit is ideal for fresh water applications, drinking and more. Comes with 1-micron sediment filtration, a carbon block for VOC reduction and a TFC membrane. Also includes quick connect fittings, a shut-off valve, a filter wrench for easy cartridge replacement, and hose bib feed adaptor. 1-year limited warranty. Made in the USA.Reduce PPM by up to 99%High efficiency 5-micron sediment pre-filterHigh capacity carbon block pre-filterHigh flow/high rejection Reverse Osmosis membrane A minimum of 40 psi is required to properly operate the system.