Flex rail 40 is the shortest version of the rails in the Flex collection.‎‎ Flex rail 40 is the obvious choice for a narrow hallway, for the most necessary supplies in your home office or as an addition to Flex rail 60.‎‎ Use Flex rail 40 to extend your Flex rail 60, hang the two rails slightly offset or use them separately in different rooms.‎‎