Choosing a Monitor Arm for Accounts at a Shared Desk

Who is this for?

Shared-desk accounts users

Different colleagues need to reset the screen’s height, angle or position while using the same desk. If they work with two displays, the adjustment available for each screen also matters.

Single-screen invoice reviewers

One monitor is enough for their accounts work, but they need room beside it for paper invoices, a keyboard and other documents.

Large-screen workstation users

A larger or heavier monitor makes its stand-free weight, VESA pattern and the desk fixing the checks to settle before considering adjustment features.

What matters when choosing?

Decide whether the work needs one display or two, then check monitor and desk compatibility before comparing how easily users can reposition the screen.

Concern	What to check	Who this matters to
Adjustment between users	Check height and reach ranges, tilt and swivel, and how the selected arm’s tension is adjusted.	When colleagues take turns at the desk, I need to move the screen into a usable position without a lengthy reset; around 31% of consumers put adjustment between users first.
Space for paper invoices	Measure desk depth and clearance near walls or dividers; check where the arm sits when folded back.	I need paper invoices beside my keyboard without the screen or arm obstructing them. For around 23% of consumers, document space is the primary concern.
Monitor and desk fit	Compare stand-free monitor weight and VESA pattern with the exact arm variant; check desk thickness, strength and fixing clearance.	If my monitor is heavy or the desk edge is awkward, I need to establish that the mounting arrangement fits before choosing adjustment features; roughly 31% of consumers prioritise compatibility and stability.
Two-display workflow	Check each monitor’s load and VESA fit, the positions available for both screens and the desk space needed for the mount.	Keeping accounts on one screen and digital invoices on another would save me switching between them; around 15% of consumers make that two-display workflow their main concern.

Buying pitfalls

Choosing by screen size alone

Screen size cannot establish whether an arm will hold and adjust a monitor. Weight, VESA fit and the selected arm’s operating range matter too; Ergotron notes reduced vertical adjustment for monitors over 9.1 kg on the cited LX model.

Find the monitor manufacturer’s weight without its stand and its VESA pattern, then compare both with the exact arm variant.
Assuming any desk edge will take a clamp

Desk thickness, strength, edge construction and clearance underneath affect installation. Ergotron specifies a 1.2–3.2 cm desk-edge range for its cited under-mount clamp; that range does not apply to every clamp.

Measure and inspect the desk before choosing a clamp or grommet fixing, and follow the selected product’s installation requirements.
Buying a dual arm for a one-screen workflow

A dual arm adds a second monitor’s fit, load, cables and placement to plan. It serves a different purpose from leaving room for paper invoices beside one screen.

Choose a dual arrangement when accounts and invoice material need to stay open on separate displays; otherwise check whether one arm provides the reach and folded position your desk needs.
Treating the arm as the whole workstation solution

An adjustable screen does not settle chair, keyboard, lighting or document placement. For qualifying UK employees, the Health and Safety Executive says the employer’s display screen equipment assessment must consider the whole workstation.

Arrange the desk around its users and their work, then set the screen position as part of that wider setup.

Monitor-arm brands to consider

Ergotron

Its desk-mount range includes single, dual and heavier-monitor configurations, making exact model and fixing details important to compare.

The cited LX Desk Mount model specifies a 3.2–11.3 kg monitor-weight range.
Ergotron identifies that cited LX SKU as discontinued and notes reduced vertical adjustment above 9.1 kg; check the current model rather than relying on the older listing.

Fellowes

Its monitor-arm range includes single and multiple-display arrangements for office desks.

Fellowes specifies a 1–9 kg screen-weight range for the cited Tallo range.
Mounting and adjustment details depend on the Tallo configuration; confirm the exact model and fixing before ordering.

Kensington

Its range includes single, dual and heavy-duty arms, so the intended display arrangement is a useful starting point.

The cited SmartFit Ergo single arm specifies VESA 75/100 mounting and support up to 8 kg; the cited dual crossbar model specifies up to 9 kg per monitor.
Those limits belong to different models. Check the chosen arm’s capacity, screen-size limit and adjustment arrangement rather than applying one model’s figures to another.

Humanscale

Its M/Class range offers different load bands and configurations for single- and multiple-monitor workstations.

Humanscale lists a 2.3–10 kg range for the M2 Pro single-monitor arm.
Humanscale specifies a different limit for M8 Pro dual use with its optional crossbar: up to 12 lb per monitor. Check limits for the configuration being purchased.

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Frequently asked questions

Does a monitor arm make a shared UK workstation compliant with display screen equipment requirements?

No single arm establishes that. For UK employees who use display screen equipment daily for continuous periods of an hour or more, the Health and Safety Executive says the employer must assess the whole workstation and reduce identified risks, taking account of the work and the individual user.

What should I measure before ordering a desk-mounted arm?

Check the monitor’s weight without its stand and its VESA pattern, then measure desk thickness and inspect the edge and underside where the fixing would go. Fellowes also advises confirming that the desk can support the combined monitor-and-arm load; compare your measurements with the exact arm’s clamp or grommet instructions.

Is one arm or a dual arm more useful for accounts and invoices?

A single arm suits a one-screen workflow with paper invoices on the desk; consider a dual arm when accounts and digital invoice material need to remain visible on separate monitors. With two displays, check each monitor’s weight and VESA fit as well as the fixing and space required at the desk.

Where should the screen sit after the arm is installed?

The Health and Safety Executive’s general guidance places the top of the screen at about eye level and the screen roughly an arm’s length away. Set the chair, keyboard and documents in their normal working positions before adjusting the arm for the person using the desk.