APEX MR-2020 Undercounter 2-Stage Drinking Water Filter The first stage high capacity polypropylene sediment filter  Extracts suspended materials such as sediment, rust, insects, and other particles down to 5 microns. This cartridge also extends life of other, more expensive cartridges and prevents damage. NSF Certified, acid washed, high performance Organic coconut shell activated carbon Block Filter absorb heavy chlorine byproducts such as chloramines, THM, and TCE. The double carbon briquettes filter out organic matter from water without release of carbon fines. Also, this carbon block removes volatile organic compounds (VOCs), insecticides, pesticides and industrial solvents. MADE IN THE USA: Proudly made in the USA, APEX makes all of their products according to the National Safety Foundation certified water filter safety standards and requirements. By following the strict guidelines of the NSF and the FDA, we ensure that the water your family drinks is completely safe and healthy. Let APEX clean and protect your drinking water so you dont have to worry about it. Completely Assembled Ready to Install & Wall mount option as well.