Ergotron 45-245-026 LX Dual Side-by-Side Arm

Please note: Larger displays ( 23" - 27" ) cannot be positioned in a stacking orientation. They can only be placed side by side.

Product ID 16108
Ergotron 45-245-026 LX Dual Side-by-Side Arm
Technical drawing
Technical drawing
Ergotron 45-245-026 LX Dual Side-by-Side Arm
Ergotron 45-245-026 LX Dual Side-by-Side Arm
Ergotron 45-245-026 LX Dual Side-by-Side Arm
Ergotron 45-245-026 LX Dual Side-by-Side Arm
Ergotron 45-245-026 LX Dual Side-by-Side Arm
Ergotron 45-245-026 LX Dual Side-by-Side Arm
Ergotron 45-245-026 LX Dual Side-by-Side Arm
Technical drawing
Technical drawing
Ergotron 45-245-026 LX Dual Side-by-Side Arm
Ergotron 45-245-026 LX Dual Side-by-Side Arm
Ergotron 45-245-026 LX Dual Side-by-Side Arm
Ergotron 45-245-026 LX Dual Side-by-Side Arm
Ergotron 45-245-026 LX Dual Side-by-Side Arm
Ergotron 45-245-026 LX Dual Side-by-Side Arm


  • Desk mounting dual monitor arm in polished aluminum color
  • Side-by-side arm: Positions monitors side-by-side
  • Screen size: Monitor screen size cannot exceed 27"
  • Weight: Each monitor can weigh in the range 5-20 lbs 
  • Horizontal extension: Monitors extend 20"
  • Vertical lift: Adjusts 13" vertically 
  • Independent adjustment: Monitors can be adjusted independent of each other
  • Please see, if you want flexibility to stack your monitors vertically or place side by side
  • See if you want the desk mounting dual monitor arm in matte black
Animation of Ergotron 45-245-026 LX Dual Arm
Ergotron LX Desk Mount Folding Arm


Ergotron 45-245-026 allows you to position dual monitors side by side for increased productivity. It also lifts the monitors above the desktop creating valuable desk space.

Durable steel and polished aluminum construction. Create a fully adjustable side-by-side monitor configuration that lifts both LCD screens up to where they’re easier to see while reclaiming valuable worksurface. Reposition your LCDs with just a touch. Up. Down. Forward. Back. The LX provides unparalleled range of motion. Save time by using multiple applications at once - eliminate toggling back and forth between documents and programs.

Technical Drawing

Technical drawing for Ergotron 45-245-026 LX Dual Side-by-Side Arm

Technical Specifications

LCD size Capacity Lift Tilt Pan Rotation VESA
Screen Capacity Lift Tilt Pan Rotation VESA
Up to 27"

14 - 40 lbs

6.4 - 18.1 kg


33 cm

75° 360° 360° MIS-D

Product Information

Part Number 45-245-026
Description LX Dual Monitor Arm, Side-by-Side (polished aluminum)
  • Two arms
  • Two extensions
  • Pole
  • T-bracket
  • Base
  • Desk clamp
  • Grommet mount
Laptop Tray Can be configured to hold a laptop instead of an LCD display; also order the LX Notebook Tray (50-193-200)
Quality Tested 10,000-cycle test applied to lift mechanism, ensuring years of trouble-free height adjustment
Improved LX Arm Features & Benefits
  • Steel and polished aluminum construction offers greater durability and enhanced aesthetics
  • Snap-fit cap secures interface of arms to extensions for greater stability
Larger Displays 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 = 1440 lbs (6.418.1 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" (8–50 mm) wide and up to 3" (76 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


  • Position LCD screens for maximum ergonomic comfort with unparalleled range of motion 
  • Promotes wellness in any work area.
  • Free up your desktop to increase your workspace.
  • 13-inch (33 cm) height range meets the ergonomic needs of more than nine out of ten adults
  • Extends LCDs out up to 25" (64 cm) with an adjustment range of 18" (46 cm), push your displays out of the way when not in use
  • Experience productivity gains. Check out our Multi-Display Payback Calculator -determine the cost benefit associated with adding a second display
  • Open and view multiple applications and documents, eliminating the need to toggle between applications.
  • Easily turn one or both screens from landscape mode to portrait mode - view entire pages without scrolling
  • Embedded with patented motion technology, these arms enable light-touch adjustments without any knobs or levers
  • Cable management feature routes cables under the arm, out of the way
  • Easy to use - simple installation and effortless operation
  • Passes Ergotron’s 10,000-cycle motion test, which ensures years of trouble-free height adjustment
  • Patented Constant Force lift-and-pivot motion technology

Frequently Asked Questions

q I own an Ergotron 45-245-026 LX Dual Side-by-Side Arm, which I use attached to a Varidesk stand-up desk. I wish that the vertical tube was 10" instead of 4". Do you have a replacement/accessory part like that?

Unfortunately this item does not have an interchangeable pole.

q Can I use this arm with one 200mm x 100mm VESA monitor and one 100mm x 100mm VESA monitor?

Yes, you can. However the hole pattern on the two VESA plates of this arm is 100 x 100 mm & 75 x 75 mm and you would need to get the VESA Adapter Kit so that the 200x100 VESA hole pattern can fit with the 100x100 hole pattern. Please consider that the weight of this VESA Adapter Kit is 1.8 lbs while calculating the compatibility of your monitors with this arm.

q Does this unit come with desk clamp and a grommet mount?

Yes, the LX Dual Side-by-Side Arm includes the desk clamp and Grommet mounts.

Model 45-245-026
Manufacturer Ergotron
Part Number 45-245-026
UPC 698833012033
Weight lb(s)
Color Polished Aluminum
Weight Capacity Individual monitor weight = 7–20 lbs (3.2–9.1 kg); maximum combined weight = 14–40 lbs (6.4–18.1 kg)
Lift (33 cm) 13 in
Tilt 75 degree
Pan 360 degree
Rotation 360 degree
Mounting Pattern VESA FDMI MIS-D, 100/75, C (hole pattern: 100 x 100 mm & 75 x 75 mm)
Clamp Thickness Attaches to edge up to 2.6
Grommet Thickness Attaches through hole 5/16
Shipping Dimensions 19.25
Shipping Weight 17.3 lbs (7.9 kg)
Warranty Ten (10) years
Mounting Options Desk
Monitor Arm Types 2 Monitors
Number of Monitors 2 Monitors
Weight 13.9 lbs (6.3 kg)
Maximum Monitor Size 27
Monitor Placement Side-by-Side
Price $400 - $499

Customer reviews

  • 1 stars 1
  • 2 stars 0
  • 3 stars 0
  • 4 stars 0
  • 5 stars 2
(3.7 out of 3)
This product does not meet my needs.

by John H, Lakewood, Colorado, May 25, 2017

I had hoped with the three joints, the level of flexibility would be adequate. The monitors could not be adjusted to the proper viewing locations due to the proximity to the wall. However, I am unwilling to move my desk any further from the wall.

Love It!

by Karen L, North Carolina, Jun 14, 2016

The dual side-by-side arms are awesome. This unit frees up desk space and the monitors can easily be adjusted to any height, distance or width needed. I would definitely recommend them to anyone using dual monitors. It is easily assembled and the technical support is great if you have questions.

Wonderful Solution for our Reception Desk.

by Jenn C, Texas, Feb 22, 2016

We were looking for a solution to raise the monitors at our reception desk and were having difficulties finding a solution that would work around the reception desk over hang on the top. This solution allows for the monitors to be adjusted forward and up as to accommodate that need. If I had to make one change, I would request that they were able to rise just 2 inches taller.


All Ergotron and OmniMount durable products will remain free of defects in material and workmanship for a period of five years from the date of receipt of the product, subject to any exclusions and limitations as set forth below.


  • Ten-year warranty on all HX Products, as well as LX and MX Products purchased on or after August 1, 2014

  • Zip and YES Charging Systems: Lifetime material/workmanship; three years electrical components; one year cables (power/Ethernet)

  • Ten-year warranty on LearnFit Sit-Stand Desks

  • Three-year warranty on all Neo-Flex Ergotron Products

  • Two-year warranty on WorkFit-Z Mini

  • Elevate and accessories: Lifetime material/workmanship. Five (5) years on electrical components. Cords, cables and plugs not warranted

  • The Peanut, Zido and accessories: Lifetime material/workmanship; five (5) years for pneumatic cylinder

  • One-year warranty on electronic components. For example: Auto Lock Drawers, Auto Lock Systems, Keyboard Lights, User Interface, Coiled Cord, Battery Harness, Cables from User I/F to Power Module (excludes AA batteries)

  • Two-year warranty on Power Modules by Ergotron

  • Sealed Lead-Acid (SLA) Power Systems, SLA Batteries

  • Two-year warranty on all SLA power system components by Ergotron

  • Up to one-year capacity warranty on SLA batteries (refer to Further Exclusions and Limitations section)

  • Six-month warranty against Manufacturer’s Defects on SLA batteries, or as mandated by local law

  • Lithium Iron (LiFe) Power Systems, LiFe Batteries

  • LiFe battery capacity is warranted for two years or 1200 discharge cycles, whichever comes first (refer to Further Exclusions and Limitations section)

  • Five-year warranty against Manufacturer’s Defects on LiFe factory-installed batteries (excludes LiFe replacement batteries). Factory-installed LiFe batteries are covered at 100% for the first three years; coverage for years four and five are prorated at 1/60th per month (refer to Further Exclusions and Limitations section)

  • Service Programs - 30-day warranty

  • Refurbished StyleView Carts - one-year warranty for Mechanical Components and Power Module (excludes batteries and cosmetic defects). The appropriate battery-type warranty applies

  • Original Equipment Manufacturer (OEM) Products resold by Ergotron are warranted by the respective manufacturer

  • StyleView Electric Lift motor: Three (3) years on motor and switch

Further Exclusions and Limitations

SLA Batteries

  • In Dual SLA battery systems, replacement of both batteries must occur at the same time (in accordance with the Ergotron User Manual), or the Warranty is automatically void

  • Warranties on SLA batteries (fully-charged or fully-uncharged) left in an unused state for more than three consecutive months are automatically void

  • Factory-installed SLA batteries, and replacement SLA batteries carry a Six-month Warranty Against Manufacturer’s Defects and a 90-day Performance Warranty, or as mandated by local law

  • The 90-day Performance Warranty on factory-installed SLA batteries (excludes SLA replacement batteries) is extended to one-year provided that:
  1. StyleLink software is installed and remains continually operational to show compliance with exclusions and limitations

  2. SLA Battery is not discharged below 25% capacity more than 25 times as recorded by the StyleLink software history

  3. SLA Battery is fully recharged at least once every 36 hours as recorded by the StyleLink software history

LiFe Batteries

  • LiFe batteries that fail to deliver 70% of their rated capacity during the first 1200 discharge cycles of battery life are deemed not to have met performance standards (capacity retention)

  • The LiFe battery discharge cycle is defined as starting at the fully-charged state through the fully discharged state and back to the fully-charged state. Discharge cycle counts are calculated by the software within the battery.

These warranties do not cover product abuse, modification and failure to adhere to product instructions, improper operations and/or misuse. Ergotron is not responsible for damage arising from failure to follow instructions relating to the product’s intended use. Ergotron is not responsible for injury or loss caused by or associated with the installation and/or use of equipment in any manner other than in strict conformance with the instructions set forth in its installation manuals, supplemental assembly and installation instruction sheets, technical bulletins and/or product literature. You will provide Ergotron immediate written notice of any personal injury resulting from the use of Ergotron products.

Ergotron does not warrant damages or defects to the Ergotron product under the following conditions: an Act of God, unauthorized service or repair of the Ergotron products, damage from electrical power problems, usage of parts or components not supplied by Ergotron, failure to follow product instructions and guidelines, unauthorized changes to the Ergotron product, shipping damage (other than original shipment from Ergotron), failure to perform preventative maintenance, or damage caused by peripherals or software or from other external sources.

Exclusive Remedy

Warranty Repair: In the event that any Ergotron equipment becomes defective in material or workmanship during the warranty period, Ergotron will determine with you if the product defect is covered under warranty. Ergotron, at its sole discretion, may replace or repair the unit determined to be under warranty at a designated Ergotron location or at your location. The labor costs associated with the repair of the product may be the responsibility of Ergotron if determined to be under warranty. You must receive pre-approval by Ergotron for the labor costs prior to repair or replacement of warranty products. You must contact Ergotron to obtain a Return Material Authorization (RMA) number. An RMA number may be obtained by contacting Ergotron Customer Care online or by telephone within your specific region. Contact information is available to you on the Ergotron web site at www.ergotron.com. Performance of any repair or replacement on product under warranty does not renew or extend the warranty period.

Non-Warranty Repair: You may return a product for repair that is not covered by warranty only if you have received a preapproved RMA number from Ergotron Customer Care. Labor costs and freight charges associated with non-warranty repair will be the sole responsibility of the customer, reseller or installer/integrator. A standard repair fee, specific to the product, is charged for any product that is repaired outside of the warranty period. Repairs on products out of warranty also carry a 90-day warranty, effective the day that you receive the item after repair.

For products that are not covered under warranty, Ergotron offers you the following options:
  1. You may upgrade to a newer, functionally equivalent product at a normal MSR list price

  2. Ergotron will return the product to you

  3. You can request in writing that Ergotron appropriately dispose of the product for you. A fee may apply for this service as designated by local law

Non-Defective Products: You are notified if, after examining and testing a returned product, Ergotron concludes that the product is not defective. The product is returned to you and you would be responsible for the freight charges associated with the return.

Warranty Disclaimer

Except as expressly set forth in this Limited Warranty and to the greatest extent allowed by law, Ergotron makes no other representations, warranties or conditions, express or implied, including any implied representations, warranties or conditions of merchantability, fitness for a particular purpose, non-infringement, and non-interference. Ergotron does not warrant that your use of the Ergotron product will be uninterrupted or error free. Any implied warranties that may be imposed by law are limited in duration to the Limited Warranty period, to the greatest extent allowed by law. Some states or countries do not allow a limitation on how long an implied warranty lasts or the exclusion or limitation of incidental or consequential damages for consumer products. In such states or countries, some exclusions or limitations of this Limited Warranty may not apply to you. This Limited Warranty is subject to change without notification.

Ergotron devices are not intended to cure, treat, mitigate or prevent any disease.

Warranty Transferability

This Limited Warranty is available only to the original end consumer and is non-transferable. For this warranty to be valid, the Ergotron product must have been purchased directly from an authorized distributor, reseller and/or authorized representative of Ergotron.