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Model # K-45212-CP

Internet # 203384155

HydroRail Shower Column in Polished Chrome for Beam Shower Arms

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$285.00 /each

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Model # K-45212-CP

Internet # 203384155

Store SO SKU # 1001090407

HydroRail-R allows you to easily upgrade a standard shower to a spa-like showering experience with luxurious overhead rain and handshower functionality. It’s designed to accommodate a wide array of shower configurations without altering in-wall plumbing, making it suitable for both remodels and new construction. This shower column converts your single-outlet showerhead into a two-outlet custom showering experience, and has a slide bar bracket for easy height and angle adjustments to your handshower. For smooth toggling between handshower and rainhead functions, this column features a diverter conveniently located at the base.

  • Column lets you customize your shower with a rainhead and handshower
  • For use in shower-only installations with beam showerarm for reduced ceiling height
  • Patent-pending technology allows for an easy shower installation
  • Slide-bar bracket allows you to adjust height and angle of handshower
  • Diverter at the base of the column makes for easy toggling between handshower and rainhead
  • Includes column, bracket, slide-bar and diverter
  • Includes an adapter that will fit with most installations but may require K-1194630, K-1187917, or K-1194302. Refer to the specification sheet for more information
  • Rainhead and handshower sold separately to allow for customized decor

    KOHLER HydroRail Before and After

Info & Guides

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Product Depth (in.) 
Product Height (in.) 
Product Width (in.) 
Color Family 
Polished Chrome 
Escutcheon Included 
Mount Type 
Wall Mount 
Plumbing Part Type 
Shower Arm 
Shower Arm Style 
Shower head Included 
Warranty / Certifications
Manufacturer Warranty 
Lifetime Limited Warranty 


Rated 4.5 out of 5 by 4 reviewers.
Rated 4.0 out of 5.0 by Excellent retrofit if you need a handheld showerhead and adjustable shower bar This shower rail retrofit kit is one of the nicest Kohler bathroom upgrades made and will play nicely with other manufacturers of shower faucets such as Grohe. We recently completed our basement bathroom and this will be a perfect addition to retrofitting our Grohe tub/shower faucet to now include a hand showerhead. The polished chrome finish blends in nicely with our Grohe 19822 fixture and also adds a added handhold on the shower bar. Because it has the Kohler name you can rest assured it will be adequately supported with replacement parts years down the road. I do wish I had this in my possession "during" our bathroom renovation as I would have been able to properly install additional 2x4 wood bracing prior to the durock install. While it appears to be securely anchored to the wall I am reluctant to use the shower arm as a handhold and would definitely NOT put my full body weight to the shower beam. Be sure and have both a showerhead and especially the handheld showerhead before installation as you will need them to complete this upgrade. November 12, 2015
Rated 5.0 out of 5.0 by This is a great compromise The hydrorail column is sleek and modern but also a perfect solution for folks like us who use both a rain shower head and a hand held in their shower. For me being only 5'2" its not easy reaching the diverter valve - it sure seems like its on a sky hook! And, even if I can reach it, the diverter valve is not easy to reach. But now I can enjoy both. Also it makes it easy for the grandkids to switch between the rain shower head or the hand held. The chrome finish is thick and rich and the diverter is smooth and easy to move. Now I can enjoy the gentle rain shower and in the same shower session easily switch to the hand held to rinse shampoo out of my hair. Love it. August 22, 2015
Rated 5.0 out of 5.0 by Nice and Heavy duty Nice heavy duty rail. Quality piece out of solid brass. The diverter being on the bottom is handy. Being able to adjust the height of the wand is extremely helpful I’m tall wife is short. Install went pretty easy with the right tools and a little bit of time. if you want to do a remodel and want a modern shower upgrade your existing shower to this. November 18, 2015
Rated 4.0 out of 5.0 by Your only useful extension option (from what I've seen) I was torn on three or five stars -- this is a signature Kohler item, superior materials and fantastic, comprehensive installation kit, but, there are two identical plug caps, one the same chromed stainless as the rest of the unit, the other plastic. This only affects you if it causes you to hate this thing every time you see it. I'm in that camp, but there is no functional difference between the plugs, and the plastic one isn't likely to take a catastrophic hit. The trigger for sliding the handheld dock up and down appears to be chromed stainless stamped metal. See above. I chickened out on installing this -- I have a fiberglass surround that sticks out from the wall ~1.25" -- documentation says you can offset the top connection a maximum of 1", otherwise contact Kohler for a "deep install" kit. This hydrorail was provided for review, so I have no doubt Kohler would have sent me a deep kit gratis, but, a) you have to drill four 1/2" holes, two in any fiberglass surround you might have, to insert the toggles, and b) plenty of documented warnings about the possibility of leaking at the feed pipe if that pipe isn't secured to a stud and immobile -- by design, you won't be able to see any leaking once this is installed. I'm displeased with my newbuild plumbing as it is, I have no access to it without a sledgehammer, and I'd want to be able to quadruple-check for leaking behind my $0.02 drywall at will, which, again, with this you can't. I have no idea how the lines between and above existing fixtures look like, so no idea what I'd be drilling into on the other side of the fiberglass, so, I wound up getting a stainless, chromed 15" extension straight pipe. It's already scratched, which I will bet won't be an issue with the hydrorail; 15" seems to be the max for easily available extension pipes, well short of where Kohler's arm gets you, but, no plumbing surprises. There are no flow regulators in this, so you get out whatever your system puts in, something you now have to check with fixtures before purchase. Giant, three ton brass plates for mounting, included toggles, excellent instructions including explicit dry-fit steps for double checking alignments before taking any subsequent destructive/irrevocable steps; if you have a flat surface between your shower pipe and the existing fixtures, I would expect no problems from this and a maximum one hour self-install if you're extremely paranoid and crawl through it. Just forget what I said about the plastic and stamped metal, and you'll love this. If you have a fiberglass surround and a newbuild... has a fantastic selection of sledge hammers. September 28, 2015
  • 2015-11-28 T12:32:27.548-06:00
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