Great for RETROFIT! HydroRail™ Handshower Columns Enlarge PhotoThese new additions to our HydroRail line make it easier than ever to upgrade your standard showerhead to a luxurious custom handshower experience. The columns are designed to work with a wide range of shower configurations without the need to alter in-wall plumbing. @kohlerco #Kohler #shower #bathroom #design #bathroomreno