Ergotron 45-405-026 WorkFit-LX Sit-Stand Desk Mount System

Product ID 17898
Ergotron 45-405-026 WorkFit-LX Sit-Stand Desk Mount System
Stand and work with Ergotron 45-405-026
Sit and work with Ergotron 45-405-026
Neat cable management
Work together with Ergotron 45-405-026
Desk clamp of Ergotron 45-405-026
Grommet mount of Ergotron 45-405-026
Ergotron 45-405-026 WorkFit-LX Sit-Stand Desk Mount System
Stand and work with Ergotron 45-405-026
Sit and work with Ergotron 45-405-026
Neat cable management
Work together with Ergotron 45-405-026
Desk clamp of Ergotron 45-405-026
Grommet mount of Ergotron 45-405-026


  • WorkFit-LX Sit-Stand system
  • Operation: Made up of 2 arms that let you adjust monitor and keyboard independent of each other
  • Tight Spaces: Installs on the side or back of the desk, sit-stand for tight spaces
  • 20" height adjustment: Keyboard, Monitor can be adjusted 20" vertically
  • 25 lbs weight capacity: Monitor Arm holds weight 7-25 lbs, keyboard arm up to 5 lbs
  • For dual monitor system: Monitor weight should not exceed 8 lbs each. If your monitors weigh more than 8 lbs each, please check dual monitors with the WorkFit-LX 


The highlight of Ergotron 45-405-026 WorkFit-LX is its modular and flexible design that lets you adjust the height and position of your keyboard and monitor independent of each other. This WorkFit-LX provides 20" vertical and 62" side-to-side flexibility to both the keyboard as well as the monitor.

This standing desk system enables complete control over focal distance in the positioning of the keyboard relative to the monitor screen. With an unparalleled range of adjustment, the LX easily accommodates a user’s sitting or standing posture.

Technical Drawing

Technical drawing for Ergotron 45-405-026 WorkFit-LX Sit-Stand Desk Mount System

Technical Specifications

LCD size Capacity Lift Tilt Pan Rotation VESA
Screen Capacity Lift Tilt Pan Rotation VESA
Up to 42"

7 - 25 lbs

3.2 - 11.3 kg


50.8 cm

75° 360° 360° MIS-D/E/F

Product Information

Part Number 45-405-026
Description WorkFit-LX Sit-Stand Desk Mount System (polished aluminum)
  • Monitor arm
  • Keyboard arm
  • Two extensions
  • Keyboard tray
  • Slide-out mouse tray
  • Desk clamp base
  • Grommet-mount base
  • 48 cm pole
  • Two pole collars
  • VESA brackets
  • Wrist rest
NOTE Extra-long cables may be required to span between standing and sitting heights
Weight Capacity Monitor arm = 7 to 25 lbs (3.1 to 11.3 kg); keyboard arm ≤ 5 lbs (2.2 kg)
Monitor Tilts 70° up and 5° down. When keyboard is in down position, tray features a back-tilt of 5°; folds upright 90° in storage position.
Dimensions Keyboard tray dimensions = 18.3" x 8.9" (46 x 23 cm); mouse tray dimensions = 8" x 8" (20 x 20 cm)
Mouse Tray Slides out to either left or right side, depending on user preference
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
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
Stability of Monitor Arm Is dependent on stability of desk or table to which system is attached; any bounce in desk or table surface will be transferred to arm
Cable Management Clips on the underside of the arm route and hide cords
Product Weight 30 lbs (14 kg)
Shipping Dimensions 23.3" x 19.8" x 10.3" (59 x 50 x 26 cm)
Shipping Weight 35 lbs (16 kg)
Warranty Five (5) years


  • Easily extend or retract the arms for precise control of the distance between the keyboard and screen
  • Modular design allows you to configure the system to suit your specific requirements
  • Compact footprint - fits in tight spaces including corner desks
  • Focal distance is easily changed, making it well suited for use with larger monitors
  • Cable management features route cables under the arms, out of the way
  • Stable data-entry platform
  • Patented CF motion technology provides premium ease-of-use display adjustment
  • Durable polished aluminum and steel construction
  • Proven durability: Passes Ergotron’s 10,000-cycle motion test
Model 45-405-026
Manufacturer Ergotron
Part Number 45-405-026
UPC 698833042955
Color Polished aluminum
Monitor Size Up to 42"
Weight Capacity Monitor arm = 7 to 25 lbs (3.2 to 11.3 kg); keyboard arm up to 5 lbs (2.2 kg)
Lift (50.8 cm) 20 in
Tilt Up 70 degree and down 5 degree
Pan 360 degree
Rotation 360 degree
Keyboard Tray Dimensions 18.3" x 8.9" (46 x 23 cm)
Mouse Tray Dimensions 8" x 8" (20 x 20 cm)
Weight 30 lbs (14 kg)
Shipping Dimensions 23.3" x 19.8" x 10.3" (59 x 50 x 26 cm)
Shipping Weight 35 lbs (16 kg)
Warranty Five (5) years
Side-to-side Movement 62" (157 cm)
Monitor Arm Types 1 Monitor
Monitor Arm Types Sit-Stand Workstation
Monitor Arm Types 2 Monitors
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)
Price $600 - $699

Customer reviews

  • 1 stars 0
  • 2 stars 0
  • 3 stars 0
  • 4 stars 2
  • 5 stars 2
(4.5 out of 4)
Exactly what I expected.

by Anon, USA, Jan 04, 2019

Arrived on time with no damage to product.

Product is working perfectly. The screen holds in place with no downward drift and isn’t too difficult to move (my monitor is around 10 lbs in weight). The tray for the mouse is textured well enough that I don’t need a mouse pad. The rubber strip (used as a wrist rest, and to hold the keyboard in place) isn’t going anywhere; I don’t need it because I use a compact / lightweight keyboard and it doesn’t slide around at all, but I would feel confident placing a heavier keyboard there. The monitor arm had only a little trouble handling the five or so cables I strung through it (power, two HDMI, one DP, and speakers are all plugged into the monitor), though the plastic bit seems a bit flimsy and I feel I might be applying duct tape in the future—but to be fair, the HDMI cables are large and not terribly flexible. The product does need to be affixed to a fairly sturdy table or it will wobble when you type and move the arms, but that seems like common sense and not a negative.

The assembly instructions are the only real con for this product; as noted in other reviews, they were confusing. I’ve put together more complicated IKEA furniture with less confusing instructions. My friend and I literally spent an hour doing nothing but trying to figure out what was supposed to happen next. There were also parts that weren’t used, which added to the confusion, and I’m still not sure why these plastic bits came in all sticky (also, sliding those into place along the poles got the glue on the poles, so some cleaning was required... for the poles and my fingers).

The stand is great.

by Elsa B, New York, Jul 07, 2016

The stand is great and helps me with my back pain. I can go from sitting and standing flawlessly. The only thing I would change was that the arms extended longer.

Computer Supports for Laboratory Classroom

by Crystal P, New York, Jan 06, 2016

Great experience. I contacted Ergo Direct for a solution, since we were retrofitting our lab tables in the Anatomy and Physiology lab with ventilation, leaving less room for computers.The arms suggested worked well. We were able to have the computers positioned in and down during lectures so students could see over ttem, and up and out the way when using the lab table tops for dissections. Thanks

I think I'm piloting a Star Ship!

by Jenny J, Oregon, Jul 01, 2015

I have two monitors on arms with the keyboard on an arm and this thing literally saves me everyday from carpel tunnel pain that was really debilitating. It takes a little getting used to, for example, you really need to rest your hands a bit on the keyboard because there's a little bit of quake that moves up the arms if you don't put any pressure on the keyboard at the extreme extensions that I use this thing. I also have very large monitors which add to this. But I am quickly getting used to that, particularly because my wrists and shoulders are no longer killing me on a daily basis.


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.