100% brand new and high quality Features: 1 micron PP cotton filter: can remove the sediment, rust, suspended solids, colloids, and other impurities in the water. Granular activated carbon filter (UDF filter): can effectively adsorb impurities such as particulate matter, rust, sediment,chemical material and etc. Compression activated carbon filter: can remove heterochromy, odor, residual chlorine, microorganisms, trichloromethane, impurity and etc. Reverse osmosis membrane filter: with aperture accuracy of 0.0001 micron, it can filter out impurities in water like organic colloid, bacteria, viruses, heavy metals. Rear activated carbon filter: with silver-loaded technology, it has effective sterilization function and further remove impurities to make us get a better taste of water. Five-stage Reverse Osmosis Filter Set only, other accessories demo in the picture is not included! Specification: Types: RO membrane filter: 50 Gallon, 75 Gallon Material: Polypropylene & active nutshell carbon Dimensions: As shown Color: White&blue&gray&black Quantity: 1 Set Note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 Set Five-stage Reverse Osmosis Filter (without retail package)