Ergotron 45-384-026 LX HD Sit-Stand Desk Mount Monitor Arm

There is no Extension option for 45-384-026 monitor arm

5 out of 5 (based on 9 reviews)
Product ID: 17795
  • Desk mounting LX arm 
  • 20" height adjustability: Provides sit-stand capability
  • 62" side-to-side adjustability
  • 14-30 lbs weightCan hold large monitors or mid-sized TVs weighing up to 30 lbs 
  • 46" screen size: Carries displays up to 46" in screen size
  • 33" horizontal extension: Extends display pushing it out of the way when not in use
  • Apple compatibility: Can mount 27" 2013 iMac with built-in VESA adapter
  • Please see, if your display is smaller and lighter
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List Price: $575.00
Our Price: $279.95
Shipping: $24.95 *
Usually ships in 2 to 3 business days
* applies to Contiguous United States


The Ergotron 45-384-026 is a versatile arm. Use it in your office to mount a large monitor to analyze data or mount a mid-sized TV for digital signage in a retail store weighing up to 30 lbs (13.6 kgs)

The LX provides unparalleled range of motion, being able to accommodate a user’s sitting or standing posture. Features include 20 inches (51 cm) of vertical adjustment and 62 inches (157 cm) of side-to-side motion.

Technical Drawing

Technical Drawing for Ergotron 45-384-026 LX HD Sit-Stand Desk Mount LCD Arm

Technical Specifications

LCD size Capacity Lift Tilt Pan Rotation VESA
Screen Capacity Lift Tilt Pan Rotation VESA
Up to 46"

14 - 30 lbs

6.3 - 13.6 kg


51 cm

80° 360° 90° MIS-D/E/F

Product Information

Part Number 45-384-026
Description LX HD Sit-Stand Desk Mount LCD Arm (polished aluminum)
  • LX HD sit-stand arm
  • Extension
  • Desk clamp base
  • Grommet-mount base
  • 40 cm pole
  • VESA brackets
Quality Tested 10,000-cycle test applied to lift mechanism, ensuring years of trouble-free height adjustment
Weight Capacity 14 to 30 lbs (6.3 to 13.6 kg). Monitor depth may affect weight capacity
Monitor Tilt 75° up and 5° down
Mounting Standards VESA MIS-D, 75/100 (hole pattern = 100 x 100 mm & 75 x 75 mm), MIS-E (hole pattern = 200 x 100 mm), MIS-F (hole pattern = 200 x 200 mm ONLY). Optional VESA Bracket Adaptor Kit (97-759) can be ordered separately for MIS-F interface with hole pattern of 400 x 200 mm, 400 x 300 mm or 400 x 400 mm
Locking Connections Between arm, extension and base offer increased theft deterrence and prevent potential disconnections caused by jarring or impacts
Mounting Options Desk clamp attaches to edge up to 2.5" (65 mm) thick; grommet mount attaches through hole 0.5" to 2.5" (7–65 mm) wide and up to 2.5" (65 mm) thick
Cable Management Clips on the under side of the arm route and hide cords
LX Sit-Stand Keyboard Arm To add an LX Sit-Stand Keyboard Arm to the configuration, order 45-354-026. Attach keyboard arm at base of pole while leaving the arm’s wall-mount base unused.
NOTE Computer systems mounted on this product may require extra long USB, power or video cables in order to span between standing and sitting heights
Product Weight 17.5 lbs (8 kg)
Shipping Dimensions 25" x 14.75" x 7.5" (64 x 38 x 19 cm)
Shipping Weight 20 lbs (9.1 kg)
Warranty Ten (10) years


  • 20" height adjustability allows users to alternate between sitting and standing positions while working on the display
  • Extends LCD up to 33" and pushes display out of the way when not in use
  • Vertical, horizontal adjustability provides ergonomic relief and relieves stress on the back, shoulder and neck
  • Increase viewing comfort - help reduce eye, back and neck strain
  • Upgrade LCD monitors and TVs with improved ergonomic adjustment
  • Patented CF motion technology provides premium ease-of-use adjustment
  • Cable management clips on the under side of the arm route and hide cords
  • Ideal for space-constrained spaces - folds to within 4.5" (12 cm) of back of desk in storage position
  • Secure installation - locking connections between arm, extension and base
  • Passes Ergotron’s 10,000-cycle motion test, which ensures years of trouble-free height adjustment

Frequently Asked Questions

Question: I have two questions about this Ergotron product. First question is my user is 5'7", will this work as a sit/stand option with the pole only being 16"? Secondly, with the dual monitor kit, how heavy can both monitors be and the arm still articulate for sitting/standing? Answer: Even though the pole is only 16", this arm will work as a sit-stand option for your user. If you add a dual monitor kit, the weight capacity of the arm will reduce from 30 lbs to 24 lbs as the dual monitor kit adds 6 lbs weight of its own. Also both the monitors need to be between 17-24" in screen size with an outside width of 14-24.5". Even if you add the dual monitor kit, arm will still articulate for sitting/standing, that is, 20" height adjustment.
Model 45-384-026
Manufacturer Ergotron
Part Number 45-384-026
UPC 698833040098
Color Polished aluminum
Monitor Size Up to 46"
Weight Capacity 14–30 lbs (6.3–13.6 kg)
Adjustments 20" (51 cm) of vertical adjustment and 62" (157 cm) of side-to-side adjustment
Tilt Up 75 degree and down 5 degree
Pan 360 degree
Rotation 90 degree
Mounting Pattern VESA MIS-D, 75/100 (hole pattern = 100 x 100 mm & 75 x 75 mm), MIS-E (hole pattern = 200 x 100 mm), MIS-F (hole pattern = 200 x 200 mm ONLY)
Weight 17.5 lbs (8 kg)
Shipping Dimensions 25" x 14.75" x 7.5" (64 x 38 x 19 cm)
Shipping Weight 20 lbs (9.1 kg)
Warranty Ten (10) years
Mounting Options Desk
Monitor Arm Types 1 Monitor
Number of Monitors 1 Monitor
Great Product, Feb 21, 2017
by Brian C, The Woodlands, Texas
We used this product to mount a TV in our living area. It was easy to mount and very sturdy. This is great product in both function and appearance.
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works better than I could have hoped, Jun 20, 2016
by Teddy S, California
I got this arm for my new cintiq 27" and it works perfectly for all of my digital art needs allowing me to set it up in really any position I might need it in. Purchasing it I was a little afraid of it potentially dipping down because of the weight of my cintiq but after adjusting the tenting it doesn't dip at all. If you need or want this kind of range of motion for digital art or otherwise this is what you're looking for.
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Superb!, Mar 4, 2016
by Jose A, Florida
You get what you pay for, a well made solid sturdy stand. I mounted a 27 inch Imac, installation was a breeze. Monitor floats nicely, only thing is I regret not ordering the handle and maybe the keyboard attachment.
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Great product, Jan 6, 2016
by kathy m, Washington
This product is everything I wanted and more. Really heavy duty. I use it to hold up a 27inch Cintiq display on my desk. It allows me to move the monitor any way I want including elevating it enough so I can draw standing up.
I installed the unit by drilling a hole in my desk because the frame of the desk at the edge isn't wide enough to hold anything. I would recommend this approach because, also it is more hassle, it is VERY solid.
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Best Computer Accessory Purchase Ever, Jul 15, 2015
by Bob R, Pennsylvania
I don't normally write reviews of products, but I love this thing so much I feel I should. I was considering some of the other sit/stand options like the whole desktop that raises or the self contained monitor and keyboard type that slides up and down. I'm glad I settled on this, it gives me more options IMO. When I'm standing the proper height for the keyboard is always the same, so I found a nice monitor stand that is just the right height and place my keyboard and mouse on that. So when I'm sitting or standing the options to adjust everything in and out or up and down are endless. And it seems to be really, really well built, totally worth the price.
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Love this monitor arm, May 29, 2015
by Colleen K, California
It works great with my 72" sit/stand/walk desk and holds my 27" monitor perfectly
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30" 24lb monitor easily handled, May 29, 2015
by Carsten B, California
I wanted a sit stand work area. My cube has an adjustable-height keyboard area. I had Facilities raise the entire desk, so that the keyboard area lowest point was comfortable for sitting, and the keyboard area highest point was comfortable for standing. Now I just needed to adjust the monitor height. I chose this monitor arm because I have a large, heavier monitor, and this monitor arm could easily handle it. The vertical travel is enough to to match my eyeline both sitting and standing. I easilty mounted it to the desk with the clamp mechanism. After adjusting the tension, with two fingers I can raise or lower the monitor quickly. It doesn't shake. My colleagues are jealous.
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Love It!, Apr 27, 2015
by JumpinJohn, Texas
This has solved my work space issue. I can stand, sit, move the monitor out of the way when I need the extra desk space, etc. It is very well made. Solid as a rock -- Very well made.
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Quality atop quality, Apr 23, 2015
by Andrea M, Missouri
When looking for an arm to support a 32" monitor over a rather expensive audio recording console I wanted a quality product. The Ergotron arm was recommended to me by a close industry contact and am I ever pleased. This item is quite well engineered, constructed to a very high level of quality, easy to assemble and put into operation. Well worth the investment and highly recommended.
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Ergotron 45-384-026 LX HD Sit-Stand Desk Mount Monitor Arm