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Humanscale 259 Float Board Keyboard Tray

HUS403 |

| Click Here to Learn How to Use This Desk Builder

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      Slim, sturdy, and endlessly sleek, our Humanscale Float Keyboard Tray will bring your Float Table into a new era of work.

      The tray attaches slightly below your desktop and moves with you as you go into different postures, giving you optimal ergonomics in one simple tool.

      A built-in mousing surface on the tray simplifies the need for a separate platform, and allows for full under-desk storage by streamlining the mechanism and using your desk's height adjustment capabilities to bring your keyboard to the proper height, whether sitting or standing.

      Featuring a specially-designed track and mechanism and a keyboard platform large enough to hold both your mouse and keyboard, the Humanscale 259 Float Board Keyboard Tray perfectly integrates a keyboard tray system both functionally and stylistically into your standing desk.


      • Available in white or black
      • Intuitive height adjustment that sans locks, levers, or controls
      • Dial-a-tilt positioning that allows you to type at your most comfortable angles
      • Raised tilt mechanism to protect the keyboard from collisions with the edge of your desk
      • Compact 6F mechanism takes the height adjustment out of the keyboard tray mechanism and instead lets you use your height adjustable desk to get the tray in the proper position
      • Specially-designed 25'' x 9'' keyboard platform wide enough for both a keyboard and mouse, but shallow enough to allow for full storage underneath your desktop
      • 12.5'' track fits on the underside of a 24'' or 30'' deep Float Table desktop without interference with the desks's crossbar underneath
      • Platform is composed of an ultra-durable, low profile phenolic composite which is nontoxic and easy to clean
      • Comes with your choice of foam, gel, or slim gel palm rest for even more comfort while typing


      6F mechanism height adjustment None
      Tilt 15° negative
      Track length 12.5" L
      259 keyboard platform dimensions 25" W x 9" D
      Warranty 15 years

      Humanscale Keyboard Tray Systems Promotional Item

      Goldtouch Adjustable Keyboard GTN-0033

      This keyboard's split design promotes a more natural and ergonomic typing position.

      Goldtouch Adjustable Keyboard GTN-0033

      UPLIFT CPU Holder

      Clear up desktop space and keep your computer tower off the floor by mounting it to the underneath of your desktop. This accessory is great for height-adjustable desk users.

      UPLIFT CPU Holder

      UPLIFT Single Monitor Arm

      Mount a monitor weighing between 4.5 lbs - 17.5 lbs, and adjust the height, depth or lateral position with easy fingertip adjustment.

      UPLIFT Single Monitor Arm


      Two color choices, standard black or white, are offered for the 6F mechanism. The keyboard platform will match the color selected for the keyboard mechanism.


      Humanscale Keyboard Mechanism

      The Humanscale Float Board Keyboard Tray is offered with the 6F mechanism, which does not allow for height adjustment. Instead, this keyboard tray system is meant to be paired with a height adjustable desk.


      Lateral Slider

      All Humanscale mechanisms pivot 360 degrees from the point where it is mounted to the track. Some users have a need for additional side-to-side adjustability. The lateral slider provides for eight extra inches of movement from right to left. This is a useful feature for someone at a large workstation that requires them to type facing different angles or monitors.


      Palm Support

      The Float Board Keyboard Tray gives you the option of a foam or gel palm rest, or a slim gel palm rest only 1/4'' thick for use with thin keyboards. Please note that both palm rests will sit roughly 5/8'' away from the closest corner when installed, rather than flush with the edge of the board. All palm rests are 19'' wide and are covered with an easy-to-clean synthetic leather. Palm rests come in black with a black keyboard tray system and gray with a white system.


      Humanscale Palm Rests

      When designing your Float Board Keyboard Tray, if you choose to not add a palm support, there will be holes located at the installation points on the tray.

      This is normal and part of the keyboard tray's design, but if you do not want a palm rest and installation holes in your tray, we suggest ordering another keyboard tray.

      If you have any questions or need help choosing a keyboard tray, please don't hesitate to call us!


      Track Length

      The Humanscale Float Board Keyboard Tray comes with a 12.5'' track, which will fit a 24'' or 30'' deep desk.


      Mouse Platform

      A separate mouse platform is not available as this keyboard tray is large enough to support mousing on the main platform.


      Mouse Pad

      A mouse pad for the separate mouse platform is not available as this keyboard tray is large enough to support mousing on the main platform.


      Second Mouse Pad

      A mouse pad for the separate mouse platform is not available as this keyboard tray is large enough to support mousing on the main platform.

      Product Reviews

      Write Review

      1. Fast Shipping & Excellent Product 4 Star Review

        Posted by on Jan 19th 2015

        Excellent product if you have the float desk. Very easy to install and manoeuvre the tray to a comfortable position. The only thing is that you need to make sure your keyboard is not too wide. I had the Logitech K800 and it was too wide to fit on the tray once the palm pad was fitted. Will need to purchase a narrower keyboard.

      Warranty Information

      This product comes standard with a 15-year warranty.

      Return Information

      • Return windows close 30 days after you receive your item.
      • You are responsible for obtaining a Return Merchandise Authorization, the cost of shipping, and potential restocking fees, if the item has been opened.
      • To start a return, or to view the full returns policy, click here.
      Your Cost $245.00 List Price: $340.00
      Ships Free (US48)
      Ships in 5-7 business days

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      Bulk Deals

      In many cases, we can offer bulk quantity discounts for purchases or smaller orders made over an extended period of time. Bulk deals are based on anticipated volume and the products you've selected. We can also provide you with brochures and swatches to assist in your purchasing decisions.

      If you would like to request a quote, we can be reached via phone (800-531-3746), email (, or live chat from 8am - 7pm Monday - Friday and from 10am - 6pm Saturday.

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