This was installed on a section of a web lamination line that was never put into service. It was however stored for the last year and a half in a rigger's warehouse. While there an exposed rail end did come in contact with water over spray mist from them washing their equipment. That would be the cause of the rust on the one end of the rail. See pic. This portion of the rail does not affect the function. Other than that just some general shelf wear from being in storage for awhile.