Cobra Sit-to-Stand Keyboard Tray System


Keyboard Tray:
Front Swivel Plate:   ADD (Add $27.72)
Positive Tilt Lockout:   ADD (Add $2.64)
Qty: - +
   - OR -   

Cobra Sit-to-Stand Keyboard Tray System

Easy, precise and intuitive fingertip height adjustment
Raises 7.5" above track & 5.75" below—Great vertical reach!
Keyboard is counter-balanced for effortless vertical travel
Welded steel arm design assures maximum stability
Ergonomic tilt wheel gives 20° negative tilt and 10° positive tilt
Positive tilt lockout available
Optional swivel plate provides additional rotation at the tray
Also see the Sit-Stand Keyboard Tray, which is easier to use and easier to tilt!
According to several medical studies, spending the majority of the day in a sitting posture can adversely affect health in a variety of ways. Sit-stand ergonomic products are designed to allow workers to alternate between sitting and standing at their desks throughout the day. The IS-SS Cobra sit-to-stand articulating keyboard platform and spring-assisted mechanism form a combination that is practically impossible to beat in performance, cost and durability.

From a track height of 27.5" (corresponding to a 28.5" tall work surface), the arm raises 7.5" to accommodate most standing workers up to 5’ 6”. The tray height is adjusted effortlessly using the intuitive lift-and-release mechanism to position it anywhere within the vertical range of 13.25" without the need for knob activation. The workstation arm rotates 360 degrees at the base, where the mechanism meets the track. The arm is compatible with a large variety of different trays that include options such as keyboard and mouse gel palm rests.

Offers a keyboard tray tilt adjustment from -20° to +10°. Some ergonomic guidelines suggest that positive tilt may be detrimental to wrist comfort and safety. The "positive tilt lockout" selection restricts the motion to the negative range.

This adjustable keyboard tray system offers, as standard, the ability to rotate the mechanism a full 360° where the arm meets the track. Select the "front swivel" option if you would like to add the ability to rotate the keyboard tray 360° on the arm mechanism.

Warranty: 5 Year limited


Max Swivel (at Base): 360°
Max Swivel (at Elbow): 360°
Max Swivel (at Monitor): 360°
Keyboard/Mouse Weight Range: All Keyboards/Mice
Max Tray Height Above Desk: 12.7"
Reach/Track Length: 17.75", 21", 23" tracks
Max Swivel (Arm on Track): 360°
Front Swivel (Tray on Arm): Optional 360°
Tray Tilt Range: +10° up, -20° down
Positive Tilt Lockout: Optional


Slim Natural 19" - WBK-26283: The SlimNatural 19-inch keyboard tray is only 0.25-inches thin and features a highly tilting and swiveling left/right mouse platform with a mouse catcher and cord manager.

SlimForm 19" - WBK-26285: The SlimForm 19-inch keyboard tray has a low profile for maximum knee clearance. It features a tile & swivel, left/right switchabel mouse platform with a gel palm rest for maximum confort.

Clamp w/ Mouse Tray - WBK-25568: This clamp style keyboard holder works with most IS-Series underdesk keyboard arem mechanisms and comes with a mouse tray that can be attached on the right or left of the keyboard. 

SlimForm 27-inch Keyboard Tray - WBK-26207: The SlimForm 27-inch keyboard tray in only 0.25" thick, allowing complete knee clearance and features a left/right switchabel gel mouse pad that captures the mouse when the platform is tilted. 

Mouse Around - WBK-26662: The MouseAround keyboard tray has a mouse tray that offers both a straight lateral motions and a forward swivel. It has a gel paln rest and a gel mouse pad. It is recommended for multiple uer platforms. 

Omniboard - WBK-26212: The Omniboard keyboard tray is the best solutions for multi-user workstations. The mouse platform moves instantly from right to left. It can swivel and tilt for maximum ergonomic confort and position the mouse above or below the keyboard level. 

20-inch Phenolic Tray - TRS20-8.5-WBK: 20" wide by 8.5" deep standard keyboard and mouse tray compatible with IS-Serices keyboard arm systems. 

26-inch Phenolic Tray - TRS26-8.5-WBK: 26" wide by 805" deeop standard keyboard and mouse tray compatible with IS-Series keyboard arm systems. 

Arm and Track

The arm and track combined together have a total length of 31.25". The arm, not including levers, has a width of 5.75" while the track is slightly more narrow with a width of 5.5".
Arm and Track

Top view

The arm by itself, without either the keyboard platform or track is 18.5" in length and 5.75" in width at its widest, not including the lever mechanism.
Top view

Vertical rise

The IS-SS has a large vertical range of 13.25", 7.5" above the surface. From a 29" tall worksurface, this range allows for a sit-to-stand accessibility for users up to 5' 6" tall.
Vertical rise

Arm retraction

When pulled to the front of the track, the arm and tray reach out 16.5" beyond the the edge of the desk. When fully retracted, most of the arm is hidden beneath the desk surface, with a portion of the keyboard tray extending out past the edge.
Arm retraction

Tilt tray

The IS-SS platform has a total tilt range of 30 degrees, 20 degrees negative and 10 degrees positive. The positive tilt can be removed with the positive tilt lock-out option.
Tilt tray

Tray rotation

If there are no obstructions to inhibit movement, the arm can rotate a full 360 degrees where the arm meets the track. This illustration shows the Slim Natural type keyboard in various positions.
Tray rotation

Track: 17.75"; 21"; 23"


Can you explain what "positive tilt lockout" is? I see that is restricts the tilt range to -20 to horizontal. But I'm not sure which direction is positive and which is negative.

Positive tilt is when the back side of the tray is higher than the front edge. We offer the positive tilt lockout for those who do not want to utilize positive tilt.

What happens if the lever breaks? Can it be replaced?

In the unlikely event that the lever breaks, the component will be replaced free of charge during the 5 year warranty period. To date we have had no experience with breakage of this type with this USA-manufactured product.

Can I order a gel wrist pad for the SlimNatural 19 Keyboard Tray?

This particular keyboard tray does not have a wrist or palm pad. This platform is made for specific keyboards that generally fit over the entire tray, specifically the Microsoft Natural, Natural Elite, and Natural Pro keyboards. At the time of the writing of this response, 3M was manufacturing a retrofit palm rest solution called the MMMWR314LE that could serve as a solution. 


Option: Positive Tilt Lockout: Some ergonomic guidelines suggest that positive tilt may be detrimental to wrist comfort and safety. The "possitive tile lockout" selection restricts teh tilt rance to -20 degrees from the horizontal position. 

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