The WorkFit-S clamps on to the front edge of your desk and uses the Ergotron's Constant Force spring lift mechanism to assist in moving the keyboard tray, upper worksurface and monitor through the range of motion. The vertical adjustment range is 18", and the monitor mount supports independent vertical adjustment through an additional 4.8" range. The mounting surface must be between .47" and 2.4" thick for the clamp to function, and the monitor must be between 16 and 28 lbs for the LCD pivot (10° down to 20° up) to function correctly. The keyboard tray is 27" wide x 9" deep x 0.25" high, can adjust to a 7.5° negative inclination, and can support a maximum weight of 5 lbs. It can be mounted at 3 different depths which provides a 3" range of adjustment and in addition can also be positioned to either the right or left in order to centrally position the keyboard in front of the monitor. The upper worksurface is 23" wide x 15" deep x 0.25" high, with a maximum load capacity of 5 lbs.

This HD model is designed to accommodate monitor sizes up to 30" and weighing between 16 and 28 lbs can handle a maximum combined weight load (including monitor, worksurface and keyboard loads) of 29 lbs.

NOTE: It is recommended to strengthen the mounting point to prevent damage to the desktop.

The Freedom Stand Dual from Ergotech Group is a height-adjustable sit-stand add-on unit that converts almost any sit-only desk into a sit-stand desk. This all-in-one unit will raise a keyboard, mouse, or other desk accessories, including dual monitors, to whatever standing height needed (up to 19.0" above desk height for the keyboard platform; up to almost 42.0" above desk height to the middle of the monitor).

The keyboard platform (30" W x 18.8" D) and monitor mount (75x75 or 100x100 mm VESA compatible) move as one unit for height adjustment.* The Freedom Stand uses a heavy metal base to stabilize the unit so that it can be positioned anywhere on the desk surface without having to clamp or bolt it to the desk. Also, there is a release mechanism built into the keyboard platform on the right side, which releases a lock when pressed so that you can then effortlessly move the platform up or down as desired.

*NOTE: The monitor height relative to the keyboard platform is set when the unit is assembled and is not intended to be adjusted on the fly while in use. It can be readjusted by disassembling the monitor clamp and reassembling at whatever height is needed.

The Focal Brio Adjustable-Height Standing Desk from Safco Products offers workers interested in standing or leaning a compact solution that can fit even small home offices. Manual height adjustment permits it to be positioned wherever is convenient, meaning it can also serve well as a temporary work location for on-the-go notebook users. The adjustable height range also means that the Brio can serve well as a podium for multiple users, while also offering a much larger usable surface than traditional podiums.

The slight angled (3°) top is also ideal for artists or designers and works especially well for those who choose to use a leaning seat such as a Mobis, Pivot, or Twixt seat. A convenient recessed cup holder offers a secure position for beverages.

The top is supported by a steel column containing the precision height adjustment mechanism. The metal base provides a 12" deep angled footrest that encourages users to change foot positioning while standing and also works well for bracing while on a leaning seat. A single rotation of the hand crank accomplishes 1/8" of height adjustment, encouraging users to make fine height adjustments throughout the day. Small wheels in the rear and a handle below the top mean that the Brio can easily be moved between locations.

The DeskRite Mobile Transportable Height Adjustable Desk from Posturite offers those interested in working from a standing or leaning position a compact solution sized to fit even the smallest of home offices. A foot-activated gas spring permits height adjustment to any point between 31.1" and 46.6".

This desk is designed with mobility and transportability in mind and works best as a laptop or notebook standing/leaning workstation. The incorporated wheels and handle facilitate ease of movement between locations and the full folding capability means it can also be transported to remote work locations to serve as a temporary work station for on-the-go notebook users. The adjustable height range also allows the DeskRite Mobile Desk to serve well as temporary podium, accommodating a range of heights while also offering a much larger surface than traditional podiums.

The top is supported by a steel column containing the gas spring height adjustment mechanism. A convenient hand release just below the desk surface lets each individual choose the angle that best meets their working requirement - lockable at any point from a slight -2° tilt to folded fully vertical against the lift column. A ledge along the front edge of work surface ensures that laptops, notebooks, or papers cannot slide off of the tilted surface.

The ZipLift Sit-Stand Converter from iMovR converts any fixed-height desk into a height-adjustable work space. This sturdy and solid desk converter has infinite height adjustment of 13.8" with smooth movement and no bounce-back or settling after locking the desired height. At the highest setting with the upper platform at 20.6" above the desk, there is no detectable "wobbling" or movement of any kind of the mechanism, even when typing. When raising the platform up, the platform and keyboard tray cantilevers forward, so that the user moves away from the stationary desk while standing.

The upper platform for monitor, tablets, or documents is 35.4" wide by 15.7" deep, while the keyboard tray is 26.4" wide by 13" deep. Two hand-release levers are used to unlock the unit for adjusting up or down via the gas-cylinder Z-lift mechanism. Additional features include a 2" grommet hole at the back of the upper platform for attaching monitors, and a tilting mechanism (+/- 10°) for the keyboard tray for those who want their keyboard and mouse at a negative incline while standing.

Available only in black.

The Eureka Sit-Stand Desktop Single Arm from Eureka Ergonomic converts a fixed-height desk into a height-adjustable sit-stand desk. It is free-standing (no clamping required) and easily moved to any position on the desk. A single hand-operated release permits infinite keyboard height adjustment to any point from 0.75" - 11.75" above the mounting surface. If mounted on a 29.5" high surface this will provide a standing height suited to those up to 5'8" to 5'9". Taller indivduals should consider other options that offer greater elevation. The upper worksurface where the display is mounted and the keyboard tray move in concert, maintaining a 5.75" difference between the two levels. In order to minimize the physical demands, adjustment is assisted by a gas spring rated up to a maximum combined rating of 30 lbs (5 on keyboard tray, 25 on worksurface). Cherry woodgrain finish and Black accents add a finishing touch to this sit-stand desk solution.

The keyboard tray features an 11" deep x 26" wide primary section that provides space for a full size keyboard and average mouse. If using a compact keyboard there is plenty of space for some speciality ergonomic mice that have larger footprints. Shallower 5.5" deep x 2.25" wide "wings" extend on both left and right sides and may provide some additional usable space for a standard mouse.

The upper worksurface is 20" deep and tapers from 31.5" W at the front to 27" at the rear. It will easily accommodate a large single monitor and may be able to support dual monitors mounted on a monitor arm (if the combined weight does not exceed the 25 lb. maximum rating. The surface provides space for multiple documents to be kept available.

The Eureka Sit-Stand Desktop Single Arm can be deployed on desks as shallow as 23". With the base at the front edge of the desk the keyboard tray will project approximately 10" when in the seated position, and about 5.5" when at the highest. On deeper desks the unit could be positioned further back to minimize the projection beyond the desk surface to just 4.5" when in the seated position.

The WorkFit-S clamps on to the front edge of your desk and uses the Ergotron's Constant Force spring lift mechanism to assist in moving the keyboard tray and monitor through the range of motion. The vertical adjustment range is 18", and the monitor mount independently can vertically adjust an additional 5". The desk edge must be between .47" and 2.4" thick for the clamp to function, and the monitor must be between 6 and 16 lbs for the LCD pivot to function correctly. The keyboard tray is 16.5" wide x 9.3" deep, and the slide-out mousing surface is 7.5" wide x 7.9" deep, and the maximum weight on the keyboard surface cannot exceed 3 lbs.

NOTE: It is recommended to strengthen the mounting point to prevent damage to the desktop.

The WorkFit-S clamps on to the front edge of your desk and uses the Ergotron's Constant Force spring lift mechanism to assist in moving the keyboard tray and monitor through the range of motion. The vertical adjustment range is 18", and the monitor mount independently can vertically adjust an additional 5". The desk edge must be between .47" and 2.4" thick for the clamp to function, and the monitor must be between 16 and 28 lbs for the LCD pivot to function correctly. The keyboard tray is 16.5" wide x 9.3" deep, and the slide-out mousing surface is 7.5" wide x 7.9" deep, and the maximum weight on the keyboard surface cannot exceed 3 lbs.

NOTE: It is recommended to strengthen the mounting point to prevent damage to the desktop.

The WorkFit-S Dual Sit-Stand Workstation clamps on to the front edge of the desk and uses the Ergotron's Constant Force spring lift mechanism to assist in moving the keyboard tray and monitors through the range of motion. The vertical adjustment range is 18", and the monitor mounts (in tandem) can independently vertically adjust an additional 5". The desk edge must be between .47" and 2.4" thick for the clamp to function, and the monitor must be between 6 and 14 lbs for each monitor for the LCD pivot to function correctly. In addition, the maximum width of each monitor cannot exceed 21.25" (for the LCDs to be able to mount on the Workfit). The keyboard tray is 16.5" wide x 9.3" deep, and the slide-out mousing surface is 7.5" wide x 7.9" deep, and the maximum weight on the keyboard surface cannot exceed 3 lbs.

Note: It is recommended to strengthen the mounting point to prevent damage to the desktop.

The WorkFit-TLE Sit-Stand Desktop Workstation from Ergotron features a "drop-down" keyboard tray to better accommodate the seated height requirements of users for whom the more common "above desk" retrofit solutions may not be suitable. It combines this with a large 23" D x 37.4" W work surface which includes a convenient integrated tablet/cell phone station with a removable tray cover. For additional convenience it also includes a detachable rear cable tray. The WorkFit-TLE moves directly up and down so a user is not forced to change position and step back from the desk. The dual releases ensure that accidental movement does not occur.

While at first glance the WorkFit-TLE may appear to offer great advantages over other desktop sit-stand retrofit products—because the tray is positioned below the mounting surface—users need to be aware that the distance below the desk surface is only 3.5". While this may work for a limited range of people, assuming a desk surface of 29" this will only position the keyboard tray down to 25.5". This means that it will actually be too high for users under 5'8". As well, because the tray is positioned below the desk surface the upper range is reduced, with the tray only able to rise 11.5" above the desk mounting surface, offering a suitable standing height for users only up to about 5'7".

The shallow depth of the keyboard tray, just 7.9", means that most ergonomic keyboards will not fit or will be limited in the range of adjustment that will be available to users. It also offers limited hand support for mousing, encouraging users to adopt usage modes that may greatly increase the risk of developing RSI.

Because the keyboard is positioned a full 8.5" below the monitor mounting surface users may find that their monitors are positioned too high for optimum viewing from a sitting position, especially if they happen to require multifocal eyewear. For standing purposes, even with the greater differential between the keyboard and the monitor mounting surfaces, most users will still require some kind of height adjustable monitor mount to further elevate the monitors.

Note: Users (above 5'10") may want to consider other options as the lower keyboard position will not provide the necessary range of keyboard height.