Monitor arms for shallow desks: four options compared

Why a monitor arm helps on a shallow desk

A monitor on its own stand needs a foot, and the foot sits on the desk in front of the screen. On a desk that is 20 to 24 inches deep, that pushes the screen toward you. OSHA's workstation guidance recommends keeping a screen at least 20 inches from your eyes, and the American Optometric Association suggests 20 to 28 inches.

A clamp-on arm fixes the base to the back edge of the desk. The screen can then float above or even slightly behind that edge, which frees the whole desktop in front of it. It also lets you raise the screen so the top sits at or slightly below eye level, as Mayo Clinic's office ergonomics guide recommends.

We have not used these arms ourselves. The picks below combine manufacturer specifications with findings from PCWorld's 2026 monitor arm roundup and Tom's Guide's monitor arm guide, both of which tested the arms they recommend.

Quick comparison

Specifications from B&H Photo's listings for the Ergotron arms, and from the Amazon listings for the HUANUO and Amazon Basics arms. Confirm them on the current listing before you buy.

Best overall for a shallow desk: Ergotron LX

The LX's long reach is what makes it useful on a shallow desk: you can push the monitor back to the rear edge for distance, or pull it forward when you need to read something closely. B&H lists a reach of up to 24 inches and a clamp that fits desks 0.4 to 2.4 inches thick, which covers almost every home desk.

Tom's Guide called it its best simple monitor arm, praising the long warranty, support for larger monitors and the range of motion, while noting that it is expensive for what it is and that setup took a little longer than its top pick.

Easiest to install: Ergotron LX Pro

PCWorld named the LX Pro the best single-monitor arm of 2026. Its tester found installation mostly tool-free and liked the wider clamp, which spreads the load across the desktop. That matters on particle board desks, which can dent under a small clamp.

The trade-off is a lower weight limit: 22 pounds against the original LX's 25. PCWorld notes that 27-inch monitors usually weigh under 10 pounds, but check yours, especially if it is a large curved model.

Best budget pick: HUANUO Single Gas-Spring Arm

PCWorld chose a HUANUO single arm as its best option under fifty dollars. Its tester mounted a 32-inch, 12-pound monitor without trouble and found setup quick, with only a few screws. The downsides: cable management was poor, and it felt less sturdy than more expensive arms.

HUANUO sells several similar single arms. The one linked here lists a 13 to 34-inch screen range and a 4.4 to 22-pound weight range. Check that your desk thickness fits the clamp; the specification on some retailer listings is unclear.

Cheapest, with limits: Amazon Basics Single Monitor Arm

Tom's Guide picked this as its budget option because it is inexpensive and easy to install. Its reviewer also found it felt cheap, had a limited range of motion, and would not recommend it long term for a 30-inch monitor. With only about 6 inches of height adjustment, it is better suited to a smaller, lighter screen.

How to check an arm will fit your desk

1. Desk thickness and edge

Measure the thickness of your desktop where the clamp will go. Most arms fit roughly 0.4 to 2.4 inches. Also check what is under the back edge: a frame crossbar, a modesty panel or a drawer can stop the clamp from closing. If the back edge is blocked, a grommet mount (through a hole in the desk) may work instead.

2. Space behind the desk

If the desk is against a wall, the arm's base and the monitor's back need space. Arms that clamp at the back edge typically need a few inches between the desk and the wall for the pole and cables. Check the arm's installation drawing.

3. Monitor weight and mounting

Look up your monitor's weight without its stand and check that the back has VESA mounting holes, usually 75 x 75 or 100 x 100 mm. All four arms here use those patterns. Some slim monitors need an adapter.

4. Desktop strength

A clamp concentrates the monitor's weight on a small area at the desk edge. PCWorld advises checking clamp specifications carefully, noting that some clamps are too small for thick desktops; on thin particle board, a steel reinforcement plate under the clamp spreads the load.

Setting the height and distance

Once the arm is installed:

1. Sit back in your normal position.
2. Move the screen until it is about an arm's length away, roughly 20 to 28 inches.
3. Raise or lower it until the top of the screen is at or slightly below eye level.
4. Tilt it slightly back so you look at the center straight on.

More detail in our guide to how far your monitor should be.

Gas spring or mechanical spring?

Most arms hold the monitor up with a spring that you set to match the monitor's weight. Gas-spring arms, like the HUANUO, are common in budget models; PCWorld noted that gas springs can weaken over time. Mechanical spring arms, like Ergotron's, are another common design. Whichever you choose, set the tension once with your monitor attached so the screen stays where you leave it.

Mistakes to avoid

• Ignoring the crossbar. Many desks have a frame bar under the back edge. If it sits where the clamp needs to close, the arm will not fit. Look under your desk before ordering.
• Mounting on glass without a plate. Some manufacturers sell steel reinforcement plates for thin or glass desktops. HUANUO, for example, lists one designed for that purpose.
• Forgetting cable slack on a standing desk. If your desk moves up and down, leave enough slack in the monitor cables for the full height range.
• Overtightening the clamp on soft wood. Tighten until the arm is firm, not until the desktop dents.

Frequently asked questions

Will a monitor arm work with a standing desk? Yes. The arm moves with the desktop. Leave cable slack for the full height range.

Can I mount a laptop on one? Many manufacturers sell a laptop tray that fits the standard VESA plate. Check that the tray is compatible with your arm.

How much desk space does a clamp take? Usually just a few inches at the back edge, compared with the full footprint of a monitor stand.

Which one should you choose?

Choosing a desk too? See desks that fit small spaces.