Ergotron LX Single Monitor Arm Review

TL;DR

The Ergotron LX is the standard adjustable monitor arm professionals keep recommending. Constant-force lift, 25-inch height range, supports monitors up to 34 inches and 25 lb, and ships with both a desk clamp and a grommet mount. It is the arm you buy once.

Why It Matters

Most cheap monitor arms either drift downward over time or fight you when you try to reposition. The LX uses Ergotron's CF (constant-force) cylinder, which is the same mechanism healthcare and design pros have trusted for years. A monitor arm that holds position is the difference between actually adjusting your screen during the day and leaving it locked in one bad spot.

Key Specs

• Supports monitors up to 34 inches, 7 to 25 lb
• 25-inch height adjustment range
• 360 degrees rotation, 75 degrees tilt, 180 degrees pan
• VESA 75 x 75 and 100 x 100 compatible
• Includes desk clamp and grommet mount
• 10-year warranty

Pros

• Constant-force lift holds position without drift
• Massive height range fits standing-desk users
• Cable management channel built into the arm
• Heavy-duty steel construction — feels indestructible
• Polished aluminum or matte black options to match any desk

Cons

• Costs more than 5x the price of generic arms
• The desk clamp is bulky on slim modern desks
• Setting tension for ultralight monitors takes patience
• Matte black finish costs slightly more than polished aluminum

Who It's For

Anyone using a monitor arm for more than two years. Also a strong pick for standing-desk users (the 25-inch height range covers seated and standing positions), dual-monitor stacks (use two LX arms), and ergonomically sensitive work setups where screen position matters daily.

How to Use It

Adjust the tension knob with a 4mm Allen key (included) until the arm holds your monitor's specific weight without rising or falling. This single step trips up most people — Ergotron tunes for the heaviest weight class out of the box. Once tuned, the arm should move with one hand and stay exactly where you leave it.

How It Compares

Versus the Amazon Basics monitor arm, the LX costs 4-5x more but lasts 10x longer and actually holds position. Versus the Herman Miller Flo, the LX is cheaper, has more height range, and matches mechanical quality. For most desks, the LX is the obvious pick over the Flo unless you need the executive look.

Bottom Line

The Ergotron LX is the monitor arm you buy once and never replace. The price stings up front and never again. If you spend hours at a screen daily, this is a no-regret upgrade.

Check the latest price on Amazon →