Loading...

Humanscale 300 Curved Keyboard Tray - Design Your Own (Discontinued)

Ergonomic keyboards get a new home base on the Humanscale 300 Curved Keyboard Tray
Shop standing desks and ergonomic accessories by UPLIFT Desk

Bring your work into your Neutral Reach Zone, starting with the keys and design your ideal workstation with the Humanscale 300 Curved Keyboard Tray.

Its unique, curved design lets users of natural or wave ergonomic keyboards increase their comfort even more with the addition of a single, work-transforming tray.

Design your own keyboard tray for an optimally functional workstation that supports you and leads you to better work with help from the Humanscale 300 Curved Keyboard Tray.

Save big on Humanscale at Human Solution!
 

Features

  • Easily configured to meet individual user needs
  • Platform design supports natural or wave ergonomic keyboards and works with any of the mouse platform options
  • The keyboard platform is made of phenolic - an ultra-strong, remarkably thin (1/4") composite that's nontoxic, durable, and easy to clean
  • Designed to fit most desks
  • 15 year warranty

Specifications

Mechanisms 9 adjustable arms available
Track lengths 11" - 27" for varying desk depths
Mousing surface 13 clip-on and swivel options
300 platform dimensions 20.75" W x 9.5" D
Warranty 15 years
 

Color

The Humanscale 300 Curved Keyboard Tray is only available in Black.

 

Humanscale Keyboard Tray Mechanisms

2G mechanism

Loosen knob to adjust and lock back into place. Unlike the 5G or 6G, this mechanism has no reference for keyboard platform angle.

Height adjustment 6.25": 1.25" above track to 5" below track
Track length Comes standard with 22" track
Humanscale 2G Mechanism

6G 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 and slimmer than the 5G.

Height adjustment 7": 1.75" above track to 5.25" below track
Track length Comes standard with 22" track
Humanscale 6G Mechanism

5G mechanism

The dial-a-tilt mechanism instantly adjusts the platform's tilt without the need to lock or loosen any knobs or levers. Its solid build quality and simplicity make this mechanism the most popular mechanism Humanscale offers.

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

4G mechanism

This is the older version of the 5G mechanism, featuring dial-a-tilt keyboard angle adjustability.

Height adjustment 6.25": 1.25" above track to 5" below track
Track length Comes standard with 22" track
humanscale 4G mechanism

5GSM mechanism for limited-depth desks

This mechanism goes 4" farther underneath a desk surface, getting a keyboard tray stored out of the way on a shorter track, perfect for desks with limited depth or small spaces.

Height adjustment 4": 0.5" above track to 3.5" below track
Track length Comes standard with 18" track
Humanscale 5GSM Mechanism

4GAD mechanism for above-desk use

This is a version of the 4G with a longer arm for use above a work surface, making it great for sit-to-stand solutions.

Height adjustment 11.5": 8.5" above track to 3" below track
Track length Comes standard with 27" track
Humanscale 4GAD mechanism

5GAD mechanism for above-desk use

This mechanism's greater-than-average adjustment range is ideal for sit-to-stand workstations, featuring steel construction for stable keying and mousing.

Height adjustment 13.5": 7.5" above track to 6" below track
Track length Comes standard with 27" track
humanscale 5GAD mechanism

KM mechanism

This mechanism features a pre-set 0 degree tilt and knob-free adjustment.

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

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.

Humanscale Lateral Slider
 

Palm Support

A curved palm support is not available for the Humanscale 300 Curved Keyboard Tray.

 

Track Length

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.

 

Mouse Platform

Clip Mouse - Mousing Platform

The clip mouse platform is the only mouse platform that allows the user total adjustment control in all three dimensions- height, depth, forward/back and tilt, allowing it to be adjusted precisely the way you need it. It also easily snaps onto either side of the tray for left or right use, and it's available in two sizes and different height ranges.


Note: The high clip has an extra one inch height for additional adjustment and usability and is the most popular accessory we sell.

90 8.5'' diameter
90H 8.5'' diameter high
91 10'' diameter
91H 10'' diameter high
90H90H 8.5'' diameter high - Dual platforms for left and right
91H91H 10'' diameter high - Dual platforms for left and right
Humanscale Clip Mouse Platform

Swivel Mouse - Mousing Platform

The swivel mouse mounts underneath either the left or right front corner of the platform. It swivels out from underneath the keyboard platform easily and tucks out of the way when not in use. This mouse platform is available in right, left and dual configurations. The main difference between the clip mouse and swivel mouse is the adjustability. The swivel platform stays on the same tilt or angle as the keyboard tray; the clip mouse angle can be adjusted independently.

11R 8'' swivel right
11L 8'' swivel left
11D 8'' swivel dual - Dual platforms for left and right
12R 10'' swivel right
12L 10'' swivel left
12D 10'' swivel dual - Dual platforms for left and right
Humanscale Swivel Mouse Platform

M2 Mouse - Mousing Platform

The M2 offers all the advantages of the swivel mouse, but it is slightly larger and offers a uniquely shaped platform. This lets a user bring the mousing surface closer to their body for a lower risk mousing position.

81R M2 right
81L M2 left
81D M2 dual - Dual platforms for left and right
Humanscale M2 Mouse Platform
 

Mouse Pad

The Humanscale 300 Curved Keyboard Tray can be ordered with a mouse pad to fit any of the available mousing platforms.

8.5'' swivel platforms MPGEL8 - 8.5'' gel mouse pad
10'' swivel platforms MPGEL10 - 10'' gel mouse pad
90 or 90H clip platforms CMPGEL8 - 8.5'' gel mouse pad
91 or 91H clip platforms CMPGEL - 10'' gel mouse pad
8'' - 8.5'' mouse platforms HSMP12TIPS - 8'' ergo tips mouse pad
10'' mouse platforms MSMP12TIPS10 - 9'' ergo tips mouse bad
 

Second Mouse Pad

A second mouse pad can be ordered with the Humanscale 300 tray for configurations utilizing two mouse platforms.

 

Track Length

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.

 

Promotional Item

FREE Goldtouch Adjustable Keyboard GTN-0033

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

Goldtouch Adjustable Keyboard GTN-0033

FREE 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

FREE 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

Be the first to write a review!

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.

Discontinued

Your Price
Write review FAQs
Ships Free (US 48)
Discontinued

Learn more about each option

Select an option...

  • Order Review

*Cycle through all the options by clicking the "Next" and "Back" buttons below

Click the next button to move to the next option

Select to see the list of options, and click each option to explore

JUMP TO AN OPTION