LX Single Monitor Arm, Desk Mount (Matte Black)
By Lee · Researched & cited, not personally tested · Updated Jul 2026
- Typical price · Jul 2026
- $130-$160
- Best for
- someone reclaiming desk space and dialing in ergonomic height for a monitor up to 34 inches
- Key spec
- Fits flat/curved/ultrawide monitors up to 34 in and 7-25 lbs, patented Constant Force spring holds any position, ~25 in extension with full tilt/pan/360 rotate.
- Skip it if
- Skip it if your monitor is very light (under about 7 lb). Below the arm's minimum weight the constant-force spring can float the screen up instead of holding it where you set it.
Typical price · as of Jul 2026
$130-$160
Key spec
Fits flat/curved/ultrawide monitors up to 34 in and 7-25 lbs, patented Constant Force spring holds any position, ~25 in extension with full tilt/pan/360 rotate.
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Lifts a monitor up to 34 inches off your desk and holds it at any height or angle you set, thanks to a spring that stays put instead of slowly drifting down.
Ergotron's LX is the long-standing benchmark monitor arm, prized for a constant-force spring that holds any position instead of slowly drifting, and a metal build that outlasts cheap gas-spring clones. The premium price is the main reason to look elsewhere.
Best for someone reclaiming desk space and dialing in ergonomic height for a monitor up to 34 inches
What earns it the pick
- Patented Constant Force spring holds the screen at any height without slow sag
- Handles flat, curved, and ultrawide monitors up to 34 inches and 7 to 25 lbs
- About 25 inches of extension with full tilt, pan, and 360-degree rotation
- Clears the desktop underneath for a cleaner, more usable workspace
The honest catch
What we’d want you to know before you buy.
- It costs noticeably more than budget gas-spring arms that look similar on paper
- The 7 lb minimum weight means very light monitors can float up rather than stay where you set them
- It needs either a desk edge to clamp to or a grommet hole, and heavier ultrawides sit best near the low end of its range
It frees the desk space a monitor stand eats up and puts the screen at a genuinely ergonomic height.
Check that your monitor falls in the 7-to-25-pound range: below about 7 lb the constant-force spring can float a very light screen upward instead of holding it, and above 25 lb it is out of spec. You will also need either a desk edge to clamp to or a grommet hole to mount through, so confirm your desk works with one of those. It costs noticeably more than look-alike gas-spring arms, and you are paying for the constant-force spring and metal build that will not slowly sag over time.
Common questions
Yes, that is the point of the constant-force spring. It holds the screen wherever you set it without the slow downward drift cheaper gas-spring arms develop, as long as your monitor is within the 7-25 lb range.
How it compares
LX Single Monitor Arm, Desk Mount (Matte Black)
- Price band
- $130-$160
- Key spec
- Fits flat/curved/ultrawide monitors up to 34 in and 7-25 lbs, patented Constant Force spring holds any position, ~25 in extension with full tilt/pan/360 rotate.
- Verdict
- Ergotron's LX is the long-standing benchmark monitor arm, prized for a constant-force spring that holds any position instead of slowly drifting, and a metal build that outlasts cheap gas-spring clones. The premium price is the main reason to look elsewhere.
BenQ ScreenBar Monitor Light Bar
- Price band
- $99-109
- Key spec
- Clips over any monitor (no desk footprint), asymmetric optics throw light on the desk not the screen (zero glare), auto-dimming ambient sensor, adjustable brightness.
- Verdict
- A monitor-mounted light bar that lights your desk and papers without bouncing glare back at the screen, and reclaims the space a desk lamp would eat. The price is high for a light, but it solves the glare-and-clutter problem cleanly for a monitor setup.
Rain Design mStand Aluminum Laptop Stand (Silver, 10032)
- Price band
- $45-60
- Key spec
- Single-piece anodized aluminum, raises screen 5.9 in to eye level, doubles as a heat sink, rear cable routing hole, sturdy MacBook-matching finish.
- Verdict
- A solid, single-piece aluminum stand that lifts your laptop to eye level and doubles as a heat sink, with a look that matches a MacBook. Great as a permanent home-desk fixture; the fixed height and heft make it wrong for anyone who wants adjustability or portability.
You're viewing LX Single Monitor Arm, Desk Mount (Matte Black) | AlternativeCheaper | AlternativeCheaper | |
|---|---|---|---|
| Price band | $130-$160 | $99-109 | $45-60 |
| Key spec | Fits flat/curved/ultrawide monitors up to 34 in and 7-25 lbs, patented Constant Force spring holds any position, ~25 in extension with full tilt/pan/360 rotate. | Clips over any monitor (no desk footprint), asymmetric optics throw light on the desk not the screen (zero glare), auto-dimming ambient sensor, adjustable brightness. | Single-piece anodized aluminum, raises screen 5.9 in to eye level, doubles as a heat sink, rear cable routing hole, sturdy MacBook-matching finish. |
| Verdict | Ergotron's LX is the long-standing benchmark monitor arm, prized for a constant-force spring that holds any position instead of slowly drifting, and a metal build that outlasts cheap gas-spring clones. The premium price is the main reason to look elsewhere. | A monitor-mounted light bar that lights your desk and papers without bouncing glare back at the screen, and reclaims the space a desk lamp would eat. The price is high for a light, but it solves the glare-and-clutter problem cleanly for a monitor setup. | A solid, single-piece aluminum stand that lifts your laptop to eye level and doubles as a heat sink, with a look that matches a MacBook. Great as a permanent home-desk fixture; the fixed height and heft make it wrong for anyone who wants adjustability or portability. |
| This page | See its case → | See its case → |
Same category, ranked by our research priority. Specs and price bands are approximate — confirm the current price on Amazon.
The Decision Receipt
- Why it's here
- Ergotron's LX is the long-standing benchmark monitor arm, prized for a constant-force spring that holds any position instead of slowly drifting, and a metal build that outlasts cheap gas-spring clones. The premium price is the main reason to look elsewhere.
- Who should buy it
- someone reclaiming desk space and dialing in ergonomic height for a monitor up to 34 inches
- Who should skip it
- Skip it if your monitor is very light (under about 7 lb). Below the arm's minimum weight the constant-force spring can float the screen up instead of holding it where you set it.
- The main tradeoff
- You pay noticeably more than look-alike budget gas-spring arms for the constant-force spring and metal build that won't slowly sag.
- What could change this
- If your monitor is light or your budget is tight, a cheaper gas-spring arm may do; confirm your monitor lands in the 7-25 lb range and that you have a desk edge to clamp to or a grommet hole to mount through.
Built from the live Amazon listing, manufacturer specs, and owner-review patterns — not personally lab-tested. Prices are approximate; confirm the current price on Amazon.
Research trail
How every recommendation is built. We research, compare, and cite — we don’t take payment for placement, and we don’t claim to personally lab-test.
- Specs & manuals checked
- Warranty & support reviewed
- Owner-review patterns analyzed
- Price history tracked
- Independent reviews cross-referenced
- Safety / recall checks where relevant
Decided it’s the one?
Check the live price and exact model on Amazon.
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