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Black rectangular desk riser with gas-spring lift, keyboard tray, steel X-frame, PVC and MDF surfaces

Lorell

Lorell 99555 monitor riser 35.4" W 37.40 lb capacity

SKU CH-R6Z7-M74VG MPN 99555

A desk riser that lifts a monitor and keyboard tray from 5 to 19.6 inches with a gas spring, supporting 37.40 lb total

  • TypeMonitor Arm
  • Gas-spring lift enables smooth height changes from 5-1/8" to 19-1/4
  • Keyboard tray tilts -5 to +15 degrees with 20mm height adjustment
  • 33 lb desktop capacity plus 4.4 lb tray capacity supports full setup
  • Sturdy X-type steel frame ensures stable sit-stand operation
  • 4" wide PVC and MDF worksurface fits large monitors comfortably

Sit-stand desk riser

The Lorell 99555 monitor riser converts a fixed desk into a height-adjustable workstation. A gas-spring mechanism lifts the worksurface smoothly between 5-1/8" and 19-1/4". The steel X-frame supports the structure while the worksurface and keyboard tray use MDF with a PVC finish.

Users needing single-surface height adjustment

This riser suits anyone who wants to alternate between sitting and standing at an existing desk. It is not for buyers who need a monitor arm that clamps or grommet-mounts, nor for setups requiring a worksurface load above 33 lb or a keyboard tray load above 4.4 lb.

37.40 lb total load capacity

The complete unit is rated for 37.40 lb, split between a 33 lb desktop limit and a 4.4 lb keyboard tray limit. Exceeding either figure risks instability, so the right part depends on the combined weight of monitors and accessories you plan to place on it.

Highlights

  • Gas-spring lift enables smooth height changes from 5-1/8" to 19-1/4
  • Keyboard tray tilts -5 to +15 degrees with 20mm height adjustment
  • 33 lb desktop capacity plus 4.4 lb tray capacity supports full setup
  • Sturdy X-type steel frame ensures stable sit-stand operation
  • 4" wide PVC and MDF worksurface fits large monitors comfortably

Specifications

TypeMonitor Arm
Shipping weight22.68 kg
Package size1020 × 620 × 195 mm

Questions about this item

What desk depth do I need so the 19.3" deep riser and the 23-1/4" keyboard tray both fit?

The riser itself is 19.3" deep and the keyboard tray extends 23-1/4" forward, so your desk must be at least 23-1/4" deep to accommodate the tray when it is pulled out.

Will my existing 33 lb monitor and 4 lb keyboard exceed the 37.40 lb total capacity?

The desktop shelf is rated for 33 lb and the keyboard tray for 4.4 lb, giving a combined limit of 37.4 lb; your 33 lb monitor plus 4 lb keyboard stays within that total.

How can I confirm the gas-spring lift is operating correctly after assembly?

Raise and lower the worksurface through the full 5-1/8" to 19-1/4" range; it should move smoothly without sticking, hold any height you stop at, and the keyboard tray should tilt between negative 5 and positive 15 degrees with its 20mm height adjustment functioning.

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