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Home Clearance and Sale Sales and Clearance Items Humanscale Humanscale Keyboard Trays Humanscale 400 Diagonal Big Keyboard Tray - Design Your Own
Humanscale 400 Diagonal Big Keyboard Tray - Design Your Own
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Humanscale 400 Diagonal Big Keyboard Tray - Design Your Own

Item #: HUS055
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The Humanscale 400 Diagonal Keyboard Tray design supports nearly all standard keyboards and is made to fit most desks. Select the mechanism, palm support and other features to suit your particular needs. Humanscale keyboard trays are Manufactured in the USA.

Note: This system is only available in black.



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The Humanscale 400 Big Diagonal Keyboard Tray platform design ensures that users type and mouse within their neutral reach zone, creating a safe, comfortable and sustainable work environment. The neutral zone in a standard office workspace is defined as the area where a user sits and works at a desk and can easily reach and interact with surrounding computer accessories, including a keyboard and mouse. Unlike older generation keyboard and mouse solutions, Humanscale keyboard trays are designed to ensure that nearly all users are able to work consistently within their Neutral Reach Zone, and thus maintain a low-risk posture. The 400 board keeps everything on one worksurface instead of using a mousing platform; this keeps a mouse on the same tilt as the keyboard in use. If you prefer to set the mousing surface angle seperately, any of the other Humanscale keyboard trays aside from the 500 and 550 keyboard tray platforms offer this option.

Features - Humanscale 400 Big Diagonal Keyboard Tray

  • Humanscale keyboard trays are easily configured to meet specific needs with the multiple options available and are the highest quality on the market
  • 400 board offers the widest single surface for a keyboard tray
  • The keyboard platform is made of phenolic: it's an ultra-strong, remarkably thin (1/4") composite that�s non-toxic, durable and easy to clean
  • The platform design supports multiple keyboards and mice combos and will fit most desks, including corner desks, using the variety of tracks lengths and corner sleeves available; see the Options and Accessories tabs for more details.
  • No mouse platforms come with this board since the worksurface is so large; users would reach too far for a mouse outside their neutral reach zone

Humanscale 400 Big Diagonal Keyboard Tray Technical Specifications

Mechanisms 9 adjustable arms available
Track lengths 11" - 27" for varying desk depths
Palm rests Available in foam or gel
400 platform dimensions 27.5" W x 11.5" D
Warranty 15 year warranty

Neutral Reach Zone Description

"The neutral reach zone is the area that can be conveniently reached with a sweep of the forearm while the upper arm hangs in a natural position at the side.� (Sanders & McCormick, 1993)


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Mechanism - Humanscale 400 Diagonal Big Keyboard Tray

The mechanism is the arm that controls the in-and-out movement, the height range and the tilt angle of your keyboard platform. All of the Humanscale keyboard tray mechanisms offer independent height and tilt adjustment with varying levels of height adjustment and standard track lengths. The 6G and 5G mechanisms are the most popular and suit a variety of workstation needs; they are strong and durable, easy to use and offer a good range of motion. The 6G is the newest Humanscale keyboard tray mechanism that offers a more streamlined design than the 5G. The 5GSM offers the same functionality as the first two but for limited depth desks. The rest of the mechanisms offer special features, like the AD for above desk applications or the DS for users who need two point of adjustment for facing different directions.

Humanscale 6G Keyboard Tray Mechanism
6G



Humanscale 6G Keyboard Tray Mechanism

  • Humanscale's newest dial-a-tilt mechanism that instantly adjusts the platform's tilt without the need to lock or loosen any knobs or levers
  • New design is much slimmer than the 5g

6G Specifications

Height adjustment 7": 1.75" above track to 5.25" below track
Track length Comes standard with 22" track

Humanscale 5G Keyboard Tray Mechanism
5G



Humanscale 5G Keyboard Tray Mechanism

  • Dial-a-tilt mechanism instantly adjusts the platform's tilt without the need to lock or loosen any knobs or levers
  • Solid build quality and simplicity make this mechanism the most popular accessory they offer

5G Specifications

Height adjustment 6.25": 1.25" above track to 5" below track
Track length Comes standard with 22" track

Humanscale 5GSM Keyboard Tray Mechanism
5GSM



Humanscale 5GSM Keyboard Tray Mechanism for Limited Depth Desks

  • For desks with limited depths or small spaces
  • Goes 4" farther underneath a desk surface, getting a keyboard tray stored out of the way on a shorter track

5GSM Specifications

Height adjustment 4": 0.5" above track to 3.5" below track
Track length Comes standard with 18" track

Humanscale 4G Keyboard Tray Mechanism
4G



Humanscale 4G Keyboard Tray Mechanism

  • Older version of the 5G mechanism
  • Dial-a-tilt feature offers keyboard angle adjustability

4G Specifications

Height adjustment 6.25": 1.25" above track to 5" below track
Track length Comes standard with 22" track

Humanscale 4GAD Keyboard Tray Mechanism
4GAD



Humanscale 4GAD Keyboard Tray Mechanism for Above Desk Use

  • 4G with a longer arm for use above a work surface
  • Great for sit to stand solutions

4GAD Specifications

Height adjustment 11.5": 8.5" above track to 3" below track
Track length Comes standard with 27" track

Humanscale 2G Keyboard Tray Mechanism
2G



Humanscale 2G Keyboard Tray Mechanism

  • Loosen knob to adjust and lock back into place
  • No reference for keyboard platform angle like the 5G or 6G

2G Specifications

Height adjustment 6.25": 1.25" above track to 5" below track
Track length Comes standard with 22" track

Humanscale AD Keyboard Tray Mechanism
AD



Humanscale AD Keyboard Tray Mechanism for Above Desk Use

  • 2G with a longer arm for use above a work surface
  • Works well for sit to stand solutions

AD Specifications

Height adjustment 10": 5" above track to 5" below track
Track length Comes standard with 25" track

Humanscale KM Keyboard Tray Mechanism
KM



Humanscale KM Keyboard Tray Mechanism without Tilt Adjustment

  • Pre-set 0° tilt
  • Knob-free adjustment

KM Specifications

Height adjustment 6.25": 1.25" above track to 5" below track
Track length Comes standard with 22" track

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Lateral Slider - Humanscale 400 Diagonal Big Keyboard Tray

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.

Humanscale Keyboard Tray Lateral Slider

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Track Length - Humanscale 400 Diagonal Big Keyboard Tray

The track mounts to the underside of your work surface. It directs and supports the Humanscale mechanism and keyboard tray as it slides forward and back. Standard length on most mechanisms is 21 5/8 inches. That length ensures that the keyboard tray can be completely stowed under your desk when not in use. Some mechanisms come standard with a shorter or longer track. Consult each description for that information, but all systems can be ordered with any track length.

Track Lengths

All keyboard tracks mount underneath the surface of the desk

  • 11"
  • 14"
  • 16"
  • 18"
  • 21.625"
  • 25"
  • 27"

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Palm Rest - Humanscale 400 Diagonal Big Keyboard Tray

Humanscale's palm rests are available in multiple sizes and thicknesses.

Palm rest lengths available for this tray: 27'', 20'' with 7'' mouse palm rest, 19'' (slim thickness only)

Select one of the foam or gel palm rest options for the 400 Diagonal Big keyboard platform. Choose a solid 27" palm rest or a split palm rest with one 20" section and one 7" long section; this feature comes in handy if a user doesn't always want a palm rest in front of their mouse or keypad (pictured in main image above). Both types of palm supports are covered with an easy to clean, black synthetic leather.

Slim 19'' gel palm rests are also available for users with thin keyboards such as those made by Apple. The slim gel palm rests are available in silver or black, but will not seat flush against the corner of the keyboard tray like the 27'' or 20'' palm rests. The slim 19'' palm rests will sit roughly 5/8'' away from the closest corner when installed.

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Notebook and Tablet Stand

The Goldtouch Go! Travel Notebook and Tablet Stand will come in handy not only when you're traveling, but anytime you want to set your laptop or tablet in an ergonomic position. Choose from seven different height settings to keep your screen at eye-level, which helps you avoid problems like eye strain and neck and back pain. This item also works well as a document holder, allowing you to input data without having to move your neck repeatedly from document to screen. The stand is lightweight and easily portable, yet strong enough to support laptops up to 17'' in length. Best of all, it's free!

Goldtouch Go! Travel Notebook and Table Stand

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NameOptionsPriceQty
Humanscale Mouse Pads
Original Price: $25.00
Our Price: $20.00
Humanscale Corner Sleeve DE100
Original Price: $122.00
Our Price: $85.00
Humanscale DE200 & DE250 Corner Sleeve
Original Price: $77.00
Our Price: $49.00
Humanscale DE400 & DE450 Corner Sleeve
Original Price: $199.00
Our Price: $154.00
Goldtouch Low Stress Mouse Pad (Mousing Platform) Blue GT6-0003 & Black GT6-0017
Original Price: $21.95
Our Price: $19.95
GoldTouch Gel Filled Palm Support Set
Original Price: $19.95
Our Price: $17.95

Customer Reviews

Humanscale 400 Diagonal Big Keyboard Tray - Design Your Own
$254.00
4 Stars based on 1 Review(s)
Victor S. West Orange NJ
4 Stars

Good product...
June 17, 2013
It works well, easy to adjust, but it responds to my typing more, than i expected. Also for the price I would expect more elegant appearance than it actually is - kinda constructivistic.



Professor Ergo's Thoughts:

A keyboard tray is a key component of an ergonomic workstation. Position your keyboard tray so you can type and mouse while keeping your wrists straight. The ideal height for the keyboard is at elbow height or lower. Typically you should locate the keyboard tray just above your lap height. Your upper arms should hang comfortably at your sides as you work. The keyboard tray should be gently sloped or tilted away from the user to allow the wrists to be straight instead of flexed. When properly adjusted, a keyboard tray allows the back, neck, shoulders, and wrists to relax. The size of the keyboard tray must accommodate the keyboard and any input device like a mouse. Avoid having your keyboard on a tray and your mouse on the desk.

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