All of our railings and components have a marine grade finish of AISI Stainless Steel, suitable for indoor, outdoor, and beachfront areas. This steel is incredibly resistant to inclement weather. While all steel is naturally corrosive, 316 stainless steel contains a higher concentration of molybdenum – making it more resistant to pitting and corrosion that occurs from stress, scratches, and other blemishes. For exterior installations, we recommend using our passivation kit to clean and seal your railing system. Our Engineering Specifications outline more information about 316 steel and maintenance recommendations.