3M Dual-Swivel Monitor Arm, Black (MA140MB) Single Arm Black

TLDR Review: 3M Dual-Swivel Monitor Arm

Published: September 17th, 2024

Pros

  • •Adjustable swivel, tilt, and rotate capability for flexible positioning of your monitor
  • •Easy height adjustment to suit different viewing needs
  • •Supports both clamp and grommet mounting, providing versatility in installation
  • •Capable of handling monitors up to 27 inches and 30 lbs
  • •Helps free up desk space, creating a more organized work environment
  • •Effective cable management system to keep cords tidy
  • •Supports dual monitors, which can enhance productivity

Cons

  • •Assembly is required which might be cumbersome for some users
  • •Some users find the height adjustment range limited compared to other models
  • •Clamp or grommet mount might not fit all desk types or thicknesses

Bottom Line

The 3M Desk Mount Monitor Arm (MA140MB) is a versatile and efficient solution to optimize desk space while providing the flexibility to adjust your monitor's position with ease. While some assembly is needed and the height adjustment range might be limited for certain preferences, it remains a solid choice for most users seeking a robust monitor mount with excellent swivel, tilt, and rotation capabilities.

Lowest at Amazon
$131.99 at Amazon
Lowest at any Popular Retailer
$135.60 at Walmart
How we researched this

About this review: We pulled together findings from professional reviews and hundreds of user reviews, and cross-referenced them with ShopSavvy's pricing data from 14 retailers to give you the short version.

Where to Buy

Prices last updated: October 5th 2026 7:12 pm
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More Answers

If you're still curious about the 3M Dual-Swivel Monitor Arm, here are some other answers you might find interesting:

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Can the 3M MA140MB monitor arm hold ultrawide monitors?

Q&A
Published: September 4th, 2024

Hey! If you're wondering whether the 3M Dual-Swivel Monitor Arm (MA140MB) can hold ultrawide monitors, here's the deal: it's designed to support monitors up to 30 pounds and 27 inches in size, according to the manufacturer's description.

So, it might work with smaller ultrawide models, but the really big ones are likely too large.

As for adjustments, this arm offers 7 1/2 inches of height adjustability and can extend up to 19 1/2 inches from the base. It also lets you switch between landscape and portrait modes and tilt your monitor, providing plenty of flexibility to set up your workspace just right.

Our research shows that people appreciate its sturdy design and stylish look. The cable management is effective, and setting it up is generally straightforward.

However, there are a few things to keep in mind. Some folks mentioned that the clamp might be tricky with desks thicker than 2.36 inches. So, if your desk is on the thicker side, you might need to think about an alternative mounting method.

Also, if you're pushing the weight limit (close to 30 pounds), you may find you need to adjust the tension on the ball joint that controls the tilt. Keeping an eye on this over time

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Does the 3M MA140MB monitor arm fit thick desks?

Q&A
Published: August 29th, 2024

The 3M MA140MB Dual-Swivel Monitor Arm is built to handle a range of setups. It supports monitors up to 27 inches and can carry up to 30 pounds, according to the manufacturer's description. However, our research shows that when it comes to thick desks, things can get a bit tricky.

One of the monitor arm's strengths is its sturdy build and ergonomic design, which usually gets good reviews. But we found some mixed feedback about how it fits on thicker desks. The arm should fit desks up to around 4.25 inches thick, but some folks had problems clamping it onto especially thick or non-standard desks. This can sometimes lead to an unstable setup.

Also, while the manufacturer says it can handle up to 30 pounds, our research indicates it might struggle with stability if you're getting close to that limit, especially with heavier monitors weighing over 20-25 pounds. People have mentioned issues like sagging or trouble staying balanced with monitors around 26 pounds.

So, it seems important to ensure the weight is balanced and the tension is adjusted right for it to work well.

If you want to use this monitor arm on a thick desk, it's a good idea to check the desk's thickness and see how

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The 3M Dual-Swivel Monitor Arm MA140MB is designed to handle monitors that weigh up to 30 pounds and are up to 27 inches wide.

Now, while the manufacturer mentions it can clamp onto desks as thick as 4.25 inches, our research indicates it might be more stable with desks up to about 2.36 inches thick. So, if your desk is on the thicker side, it's something to keep in mind or maybe even double-check.

We've also found that folks have mixed opinions on how well the arm adjusts. There seem to be some hiccups with the ball joint that lets you tilt the monitor. If you're using a monitor near the upper weight limit, it might sag or tilt if the joint isn't tightened enough. This could be annoying if you're someone who likes to adjust their monitor a lot.

If your monitor and desk fit comfortably within these reliable ranges, this monitor arm could be a good fit for you, providing decent adjustability with a reach of 19.5 inches and height adjustability of about 7.5 inches.

But if either the thickness of your desk or the weight of your monitor is pushing those limits, it might be a good idea to consider other options with more support or double-check the specs before committing.

Also,

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