Effective 11/15/2021, Humanscale will require a signature upon delivery for all FedEx shipments.
The Humanscale 300 Curved Keyboard Tray has been discontinued. For a similar product, please visit our sister site UPLIFTDesk.com and view the Keyboard Tray System Builder page.
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.
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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
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 |
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 |
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 |
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.
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Warranty Policy
Visit Humanscale for the warranty policy for this particular product.
Return Policy
Humanscale products cannot be returned.
