Buying Guide
The Best Desk-Mount Monitor Arms
Five arms compared on how they attach to the desk.
By The PC Journal editorial team
12 min read5 products evaluated
Desk-mount arms clamp to the edge or bolt through a grommet. These five list their clamp ranges or grommet options.
Check your desk thickness before ordering.
Quick Picks
Our 5 recommendations at a glance. Tap a pick for the full verdict.
Largest Screen
WALI Ultrawide Single Monitor Arm (17-49 in)
49-inch screens at 33 lb.
Best for: Super ultrawides.
Our take Check price for WALI Ultrawide Single Monitor Arm (17-49 in) (opens in a new tab)
Best Thick-Desk Clamp
HUANUO Ultrawide Monitor Arm (13-40 in)
A clamp for desks up to 3.15 inches.
Best for: Thick desktops.
Our take Check price for HUANUO Ultrawide Monitor Arm (13-40 in) (opens in a new tab)
Best Pole Height Range
VIVO Single Ultrawide Monitor Arm (13-38 in)
Up to 16 inches along the pole.
Best for: Tall users.
Our take Check price for VIVO Single Ultrawide Monitor Arm (13-38 in) (opens in a new tab)
Best Value 34-Inch
ErGear Single Monitor Arm (13-34 in)
13 to 34 inch screens with clamp or grommet.
Best for: Standard desks.
Our take Check price for ErGear Single Monitor Arm (13-34 in) (opens in a new tab)
Best Budget
ErGear Single Monitor Mount (13-32 in)
A steel pole arm at a low price.
Best for: Tight budgets.
Our take Check price for ErGear Single Monitor Mount (13-32 in) (opens in a new tab)
| Pick | Why it’s here | Best for | Price |
|---|---|---|---|
| 49-inch screens at 33 lb. | Super ultrawides. | Check price for WALI Ultrawide Single Monitor Arm (17-49 in) (opens in a new tab) |
| A clamp for desks up to 3.15 inches. | Thick desktops. | Check price for HUANUO Ultrawide Monitor Arm (13-40 in) (opens in a new tab) |
| Up to 16 inches along the pole. | Tall users. | Check price for VIVO Single Ultrawide Monitor Arm (13-38 in) (opens in a new tab) |
| 13 to 34 inch screens with clamp or grommet. | Standard desks. | Check price for ErGear Single Monitor Arm (13-34 in) (opens in a new tab) |
| A steel pole arm at a low price. | Tight budgets. | Check price for ErGear Single Monitor Mount (13-32 in) (opens in a new tab) |
Our Picks
Largest Screen1 of 5
WALI Ultrawide Single Monitor Arm (17-49 in) on Amazon (opens in a new tab)
WALI's ultrawide arm takes curved screens up to 49 inches and 33 lb.
Best for
- Super ultrawides.
Skip if
- Skip it if price comes first: the ErGear pole single cost less when we checked.
Why we like it
Its clamp fits desks up to 1.96 inches thick. Nothing else here matches its 49 in screen size limit; the HUANUO ultrawide comes closest at 40 in. Nothing else here matches its 33 lbs load rating; the HUANUO ultrawide comes closest at 26.4 lbs.
It also comes with a 33 lb capacity. Check the back of your monitor for a 75x75 or 100x100 VESA pattern before ordering the WALI ultrawide; curved and some slim monitors need an adapter. Confirm your desk edge fits the WALI ultrawide's clamp range and has no rear lip or drawer rail in the way. It was priced above the ErGear single and below the VIVO ultrawide single at the time of writing.
Key dimensions & specs
- Max screen size: 49 in
- Max load per arm: 33 lbs
- Monitors: 1
- Mounting: C-clamp or grommet
Pros
- Takes ultrawides up to 49 inches
- 33 lb load per arm
- Curved screens up to 49 inches
- 33 lb capacity
Cons
- Costs more than the ErGear pole single at the time of writing
Best Thick-Desk Clamp2 of 5
HUANUO Ultrawide Monitor Arm (13-40 in) on Amazon (opens in a new tab)
HUANUO's ultrawide arm takes screens up to 40 inches and 26.4 lb.
Best for
- Thick desktops.
Skip if
- Price-first buyers should look at the ErGear pole single, which cost less when we checked.
Why we like it
Its clamp fits desks up to 3.15 inches thick. Its 40 in screen size limit ranks second of 5 here, behind the WALI ultrawide (49 in) and ahead of the ErGear pole single (32 in). Its 26.4 lbs load rating ranks second of 5 here, behind the WALI ultrawide (33 lbs) and ahead of the ErGear pole single (17.6 lbs).
It also offers a 26.4 lb capacity. Check the back of your monitor for a 75x75 or 100x100 VESA pattern before ordering the HUANUO ultrawide; curved and some slim monitors need an adapter. Confirm your desk edge fits the HUANUO ultrawide's clamp range and has no rear lip or drawer rail in the way. It was the highest-priced of the 5 picks at the time of writing, so the case for it rests on what it adds over the VIVO ultrawide single and the rest.
Key dimensions & specs
- Max screen size: 40 in
- Max load per arm: 26.4 lbs
- Monitors: 1
- Mounting: C-clamp or grommet
Pros
- Takes ultrawides up to 40 inches
- 26.4 lb load per arm
- 26.4 lb capacity
- Clamp for desks up to 3.15 inches thick
Cons
- Costs more than the ErGear pole single at the time of writing
Best Pole Height Range3 of 5
VIVO Single Ultrawide Monitor Arm (13-38 in) on Amazon (opens in a new tab)
VIVO's single pole arm takes ultrawides up to 38 inches and 22 lb.
Best for
- Tall users.
Skip if
- If budget leads, the ErGear pole single was cheaper at our last price check.
Why we like it
Height adjusts up to 16 inches along the pole. On screen size limit it sits mid-pack at 38 in: the WALI ultrawide comes in at 49 in, and the ErGear pole single comes in at 32 in. On load rating it sits mid-pack at 22 lbs: the WALI ultrawide is rated for 33 lbs, and the ErGear pole single comes in at 17.6 lbs.
It also comes with a 22 lb limit. Check the back of your monitor for a 75x75 / 100x100 VESA pattern before ordering the VIVO ultrawide single; curved and some slim monitors need an adapter. Confirm your desk edge fits the VIVO ultrawide single's clamp range and has no rear lip or drawer rail in the way. When we checked, only the WALI ultrawide and cheaper picks cost less, and the HUANUO ultrawide cost more.
Key dimensions & specs
- Max screen size: 38 in
- Max load per arm: 22 lbs
- Monitors: 1
- Tension: Pole collar
- VESA: 75x75 / 100x100
- Mounting: C-clamp or grommet
Pros
- Takes ultrawides up to 38 inches
- 22 lb limit
- Up to 16 inches of height adjustment on the pole
- Load rating of 22 lbs, ahead of the ErGear single
Cons
- Costs more than the ErGear pole single at the time of writing
Best Value 34-Inch4 of 5
ErGear Single Monitor Arm (13-34 in) on Amazon (opens in a new tab)
ErGear's single arm takes 13 to 34 inch screens up to 19.8 lb.
Best for
- Standard desks.
Skip if
- Price-first buyers should look at the ErGear pole single, which cost less when we checked.
Why we like it
It mounts by C-clamp or grommet at a low price. On screen size limit it sits mid-pack at 34 in: the WALI ultrawide comes in at 49 in, and the ErGear pole single comes in at 32 in. On load rating it sits mid-pack at 19.8 lbs: the WALI ultrawide is rated for 33 lbs, and the ErGear pole single comes in at 17.6 lbs.
Check the back of your monitor for a 75x75 / 100x100 VESA pattern before ordering the ErGear single; curved and some slim monitors need an adapter. Confirm your desk edge fits the ErGear single's clamp range and has no rear lip or drawer rail in the way. When we checked, only the ErGear pole single cost less, and the WALI ultrawide cost more.
Key dimensions & specs
- Max screen size: 34 in
- Max load per arm: 19.8 lbs
- Monitors: 1
- VESA: 75x75 / 100x100
- Mounting: C-clamp or grommet
Pros
- 13 to 34 inch screen range
- C-clamp or grommet mounting
- Low price for a 34-inch arm
- Screen size limit of 34 in, ahead of the ErGear pole single
Cons
- Costs more than the ErGear pole single at the time of writing
Best Budget5 of 5
ErGear Single Monitor Mount (13-32 in) on Amazon (opens in a new tab)
ErGear's pole-mounted single arm holds 13 to 32 inch screens up to 17.6 lb.
Best for
- Tight budgets.
Skip if
- Skip it if screen size limit matters most to you; the WALI ultrawide offers 49 in.
Why we like it
On screen size limit it trails the group at 32 in, while the WALI ultrawide comes in at 49 in. On load rating it trails the group at 17.6 lbs, while the WALI ultrawide is rated for 33 lbs. You also get a 17.6 lb limit and the lowest price among the arms here.
Check the back of your monitor for a 75x75 or 100x100 VESA pattern before ordering the ErGear pole single; curved and some slim monitors need an adapter. Confirm your desk edge fits the ErGear pole single's clamp range and has no rear lip or drawer rail in the way. No other pick here cost less at our last price check, and the ErGear single was closest.
Key dimensions & specs
- Max screen size: 32 in
- Max load per arm: 17.6 lbs
- Monitors: 1
- Tension: Pole collar
- Mounting: C-clamp or grommet
Pros
- Steel pole
- 17.6 lb limit
- The lowest price among the arms here
- A steel pole arm at a low price
Cons
- Screen size limit trails the WALI ultrawide (49 in)
- Load rating trails the WALI ultrawide (33 lbs)
How We Chose These Desk-Mount Monitor Arms
Each pick was assessed across 4 criteria weighted for real-world use.
- Load rating
- We recorded the per-arm weight range each listing states, including curved-screen limits where given.
- Adjustment
- We noted gas, mechanical spring or pole-collar height adjustment.
- Screen size
- We noted the maximum screen size, including ultrawide figures.
- Mounting
- We checked clamp and grommet options and listed desk thickness ranges.
What to Look for in a Desk-Mount Monitor Arm
Key buying criteria so you get the right fit the first time.
Clamp or grommet
C-clamps grip the desk edge within a thickness range. Grommet mounts go through a hole and suit desks with a back lip.
Screen size limits are about leverage
A 34 or 49-inch ultrawide puts more leverage on the joint. Use an arm listed for that size, not only that weight.
Weigh the monitor without its stand
Arm ratings are per arm and include a minimum as well as a maximum. Weigh the panel alone, since the stand is removed.
Confirm the VESA pattern
Most arms take 75x75 or 100x100mm. Larger ultrawides may use 200x100 or none at all and need an adapter plate.
Gas and mechanical springs
Spring-assisted arms let you move the screen with one hand. Pole-mounted arms adjust height with a collar and a tool.
Dual arms and desk depth
Dual arms share one pole or clamp. Check the arm reach against your desk depth so both screens can sit at arm's length.
How to Choose a Desk-Mount Monitor Arm
By priority
| Priority | Consider | Why |
|---|---|---|
| Super ultrawides | WALI ultrawide | 49-inch screens at 33 lb |
| Thick desktops | HUANUO ultrawide | A clamp for desks up to 3.15 inches |
| Tall users | VIVO ultrawide single | Up to 16 inches along the pole |
| Standard desks | ErGear single | 13 to 34 inch screens with clamp or grommet |
| Tight budgets | ErGear pole single | A steel pole arm at a low price |
Scroll sideways to see every column.
Key specs side by side
Figures as each maker states them.
| Monitor Arm | Max screen size | Max load per arm | Monitors | Tension |
|---|---|---|---|---|
| WALI ultrawide | 49 in | 33 lbs | 1 | Not listed |
| HUANUO ultrawide | 40 in | 26.4 lbs | 1 | Not listed |
| VIVO ultrawide single | 38 in | 22 lbs | 1 | Pole collar |
| ErGear single | 34 in | 19.8 lbs | 1 | Not listed |
| ErGear pole single | 32 in | 17.6 lbs | 1 | Pole collar |
Scroll sideways to see every column.
Frequently Asked Questions
Why does my monitor drift up or down?
The spring tension does not match the screen weight. Adjust the tension screw on the arm's elbow or base.
How do I know if my monitor fits an arm?
Look for four screw holes on the back, 75mm or 100mm apart. If there are none, the monitor needs a VESA adapter or cannot be mounted.
Can I clamp a monitor arm to a glass desk?
It is not recommended. Clamp arms concentrate force on the desk edge; use a freestanding base instead.
Should I get a monitor arm or a riser?
A riser lifts a monitor on its own stand and needs no VESA mount. An arm frees desk space and adds tilt and swivel.
What desk thickness do clamps fit?
Most ranges fall between about 0.4 and 3 inches. Check the exact range in the product details.
Do monitor arms work with curved screens?
Yes if the curved monitor has a VESA pattern. Some arms list a lower weight limit for curved panels.
Bottom Line
WALI's ultrawide arm is the pick for 49-inch screens at 33 lb. HUANUO's ultrawide arm fits thicker desks, and ErGear's pole arm is the budget choice.