Who this setup suits

Document reviewers with small desks

Consumers who need two versions visible at once while leaving room for papers, a keyboard and a mouse. Desk attachment and the space needed for moving screens matter as much as the space occupied by the mount.

Users positioning two screens differently

Consumers who want one document centred and the other angled or set at a different distance. Each monitor still needs to fall within the chosen arm’s stated mounting and load limits.

People who use screens routinely for work

Employees and home workers arranging screens alongside working documents. The Health and Safety Executive advises considering screen height and the wider workstation, rather than adjusting the displays in isolation.

What matters when choosing an arm

For two-document comparison on a small desk, decide whether usable work surface, separate screen movement or a secure fit for your existing equipment is the deciding need. A side-by-side layout can be achieved in different ways; the mount’s movement and attachment still have to suit the desk.

Concern What to check Who this matters to
Usable desk space Measure the mounting area and look for a rear lip, cable tray or shelf that could obstruct a clamp. Check the space needed for screen movement, too. I need both versions in view without crowding out papers and input devices. Around 42% of consumers put usable desk space first.
Screen positioning Compare the stated reach, height adjustment, tilt and swivel with the positions you need for both displays. If one document needs to stay centred while the other moves inward, I need separate adjustment. For around 33% of consumers, positioning is the primary concern.
Monitor and desk fit Check each monitor’s VESA mounting pattern and weight without its stand against the exact arm’s limits. Confirm that the permitted clamp or grommet method fits the desk. I cannot use the arrangement if either screen or the desk cannot be mounted as specified. Fit comes first for around 25% of consumers.

Fit and layout mistakes to avoid

  • Judging fit by screen size alone

    A monitor within an arm’s stated size range may still have the wrong mounting pattern or fall outside its weight range.

    Check the VESA pattern and weight without the stand for each screen against the exact arm model. Where a combined load is stated, also check any limit that applies to an individual arm.

  • Assuming a clamp fits every desk

    A rear lip, cable tray or limited access underneath the desktop can obstruct the intended attachment point.

    Inspect and measure the usable edge. Consider a model with a grommet option only if the desk has a suitable hole, or one may be made with the owner’s permission.

  • Choosing long reach without planning clearance

    Moving the screens forward or angling them inward may require space behind or beside a small desk.

    Mark out the intended positions using the monitors’ widths, the wall distance and the mounting point before choosing an extension range.

  • Expecting the arm to fix the whole workstation

    Screen placement does not by itself determine whether documents, input devices and lighting work comfortably together. The Health and Safety Executive advises considering the workstation as a whole.

    After installation, arrange the chair, keyboard, documents, screen height and lighting together. For routine workplace display-screen use, ask about the applicable workstation assessment.

Brands and models to consider

These cited models illustrate different ways to position two screens; their limits should not be assumed to apply to other products from the same brands.

Ergotron

Ergotron describes its LX Dual Side-by-Side Arm as a mount for side-by-side or low-angle viewing. The cited configuration is specified for screens up to 27 inches, with up to 64 cm extension and 18.1 kg total capacity.

  • Its stated layout directly addresses keeping two documents visible together.
  • Check the limits and attachment method for the exact LX configuration, as well as clearance for the intended extension.

StarTech.com

StarTech.com specifies its ARMDUAL2 fixed-pole arm for two displays up to 32 inches and 8 kg per arm, using VESA 75 × 75 mm or 100 × 100 mm mounts. The cited model offers clamp and grommet attachment options.

  • The 39.8 cm pole provides height adjustment, while the screens can tilt, swivel and rotate.
  • Either attachment option still requires a suitable desk location, and each display must meet the model’s mounting and load limits.

Invision

Invision specifies its MX400 for two 19–32 inch monitors, with VESA 75 × 75 mm or 100 × 100 mm mounting, a 2–9 kg range per arm and up to 530 mm extension.

  • Separate arm movement suits a layout in which the two document screens need different positions.
  • Check that neither monitor falls below the stated 2 kg minimum and that the planned movement has enough clearance.

Joybuy options for two-screen comparison

This option is a dual-monitor desk stand for a two-screen document layout, rather than a specified clamp-mounted or grommet-mounted arm. Check its attachment method and footprint against your small desk before choosing it in place of an arm.

DELL Pro Dual Monitor Stand MDS19

DELL Pro Dual Monitor Stand MDS19

A dual-monitor stand for keeping two document versions on separate screens.

Before ordering, check the mounting requirements for both monitors and confirm that the stand’s footprint and installation method suit your desk.

View on Joybuy

Common questions

How can I tell whether both monitors will fit an arm?

Match each monitor’s VESA mounting pattern and weight without its stand to the limits for the exact arm. For example, StarTech.com’s ARMDUAL2 and Invision’s MX400 both specify VESA 75 × 75 mm and 100 × 100 mm mounting, but their stated per-arm weight ranges differ.

Should I use a clamp or a grommet mount on a small desk?

Use a clamp only where the desk edge and underside suit that model’s attachment. A grommet option is worth considering if the edge is unsuitable and a suitable hole can be used with the desk owner’s permission; StarTech.com specifies both options for its ARMDUAL2.

Do I need independently movable arms to compare two documents?

Not if a stable side-by-side position gives both documents the visibility you need. Separate movement is useful when one screen needs a different depth or inward angle; Invision specifies up to 530 mm extension for the MX400, while Ergotron describes its cited LX model as intended for side-by-side or low-angle viewing.

When does a work screen setup need a DSE assessment?

In the UK, the Health and Safety Executive says employers must assess workstations for workers who use display screen equipment daily as part of their normal work for continuous periods of an hour or more. The assessment concerns the workstation and identified risks, not just the choice of monitor mount.