ABOUT: The Solar FlexRack is patent-pending product of Northern States Metals (NSM). NSM is full-service aluminum extrusion and extruded products company that has over 100 employees in West Hartford, CT and Youngstown, OH. A privately-held firm established in 1975, it is NEC certified. SOLAR FLEXRACK is the most innovative solar array rack system on the market. It is a high-quality prefabricated system that can install almost 10x faster than others.