LX Dual Side-by-Side Arm


LX Dual Side-by-Side Arm

  • Designed for two monitors: side-by-side or low-angle screen views

  • Luxury arm offers easy, personalized adjustment

  • Two arms independently lift, extend and rotate for the best view

  • Holds two screens up to 27" in size

  • Built for thousands of movements by passing 10,000-cycle quality test

Availability: In stock


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The LX Dual Side-by-Side Arm saves desk space and positions monitors for the most comfort and productivity. This dual monitor mount uses patented Constant Force™ technology for easy adjustment. Up, down, forward or backward, an LX monitor arm adapts for your best view. Independent movement for each arm creates a new level of monitor placement flexibility. Made of durable aluminum and steel and put through rigorous quality tests, it’s backed by an industry-leading 10-year warranty.


≤27" †
≤40 lbs
≤18.1 kg *
33.0 cm
10 years
  • Part Number: 45-245-026 (polished aluminum), 45-245-224 (matte black)
  • Includes two LCD arms, two extensions, pole, t-bracket, desk clamp and grommet mount, attachment hardware
  • Quality Tested: 10,000-cycle test applied to lift mechanism, ensuring years of trouble-free height adjustment
  • Polished aluminum construction offers greater durability and enhanced aesthetics
  • Snap-fit cap secures interface of arms to extensions for greater stability
  • † Larger displays (e.g. 23" to 27" screen sizes) cannot be positioned in a stacked orientation; larger displays can only be placed side by side
  • * Weight Capacity: Individual monitor weight = 7–20 lbs (3.2–9.1 kg); maximum combined weight = 40 lbs (18.1 kg)
  • Mounting Standards: VESA FDMI MIS-D, 100/75, C (hole pattern: 100 x 100 mm & 75 x 75 mm)
  • Desk clamp attaches to edge up to 2.6" (66 mm) thick; grommet mount attaches through hole 5/16" to 2" (7–51 mm) wide and up to 3" (80 mm) thick
  • Product Weight: 13.9 lbs (6.3 kg)
  • Shipping Dimensions: 19.25" x 17.75" x 6.25" (49 x 45 x 16 cm)
  • Shipping Weight: 17.3 lbs (7.9 kg)
  • Warranty: Ten (10) years


Customer Reviews Write Your Own

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Great quality and stability

Review by Aaron

I've been through several brands of monitor arms over the years. Never have I encountered one that 1) looks so great, but more importantly 2) is as durable and well-built as this Ergotron arm. I'd highly recommend this product to anyone looking for a reliable monitor arm mount - it's well worth the price of admission.

(Posted on 12/16/2020)

piece of cake!

Review by Andrea

easy to follow instuctions, my two 27" HP monitors couldn't look any better!

(Posted on 12/9/2020)

Very Happy, 5th Ergotron Product and Best Purchase By Far

Review by Garrett

Spent years using four distinct Ergotron arms. They're great, but I'm on a smaller desk now and can't afford to have two bases attached, so I went with this dual side-by-side LX arm. Very straight-forward to setup, especially given that I've used the single arms for close to ten years and knew what to expect re: assembly.

Ergotron is the brand I seek for this, and they will forever be the only brand I seek for this. The only complaint I have is that those single arms are extremely difficult to pack and move. I saved the box for the dual arm though; lesson learned!

Love what these folks do. Nobody else makes my computing profession tolerable at 6'4" like Ergotron.

(Posted on 12/1/2020)

Quite Nice

Review by YH

Setup is time-consuming, but easy to follow with clear instructions. The arms themselves are great. Stiff enough not to jiggle, but easy to adjust. Just beware if you have very lightweight plastic monitors. The joints are designed to account for the weight of the monitor, so if your monitor is too light (like one of mine) then it can be difficult to adjust the arm even on the lightest setting.

(Posted on 7/20/2020)

Great product great service

Review by GK

In my world simplicity is also difficult. I got it installed with the help of the Ergo Team who stayed with me on the phone till I "touched down".

(Posted on 12/9/2019)


Review by BGONYA

The chrome double arms support the two, 22" monitors on my home sit/stand desk. I got these ergotron arms specifically because I figured that in addition to the usual desk configuration, they'd be fully articulable and sturdy enough to swivel off the corner of my desk and hang in the air. That way, my monitors can be positioned over my couch, so I can recline part of the time while I'm typing.
I'm using the grommet hole on my desk instead of the clamp-on attachment. It's only prudent.

(Posted on 11/14/2019)

Support Materials

Product Sheetpdf694.11 KBEnglish
Dimensional Illustrationspdf589.71 KBEnglish
Installation Manualpdf3.19 MB