---
product_id: 442334283
title: "Ergotron – LX Monitor Arm Extension – Add-on for LX Desk and LX Wall Monitor Arms, LX Keyboard Arm – White"
brand: "ergotron"
price: "1127 kr"
currency: DKK
in_stock: true
reviews_count: 13
category: "Ergotron"
url: https://www.desertcart.dk/products/442334283-ergotron-lx-monitor-arm-extension-add-on-for-lx-desk
store_origin: DK
region: Denmark
---

# 9-inch extension boost Simple, tool-free install Expands monitor reach Ergotron – LX Monitor Arm Extension – Add-on for LX Desk and LX Wall Monitor Arms, LX Keyboard Arm – White

**Brand:** ergotron
**Price:** 1127 kr
**Availability:** ✅ In Stock

## Summary

> 📏 Elevate your monitor game—extend, adjust, and conquer your workspace!

## Quick Answers

- **What is this?** Ergotron – LX Monitor Arm Extension – Add-on for LX Desk and LX Wall Monitor Arms, LX Keyboard Arm – White by ergotron
- **How much does it cost?** 1127 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/442334283-ergotron-lx-monitor-arm-extension-add-on-for-lx-desk)

## Best For

- ergotron enthusiasts

## Why This Product

- Trusted ergotron brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Endure:** Backed by Ergotron’s 10-year warranty and rigorous quality testing for long-lasting stability.
- • **Effortless Setup:** Quick, no-fuss installation means you’re ready to work in minutes—no extra tools required.
- • **Sleek & Streamlined:** Clean cable management keeps your desk clutter-free and visually sharp for a professional vibe.
- • **Extend Your Workspace:** Add a precise 9-inch extension to your existing LX Arm for ultimate reach and flexibility.
- • **Tailored Adjustability:** Extra pivot point unlocks a wider range of ergonomic positions for personalized comfort.

## Overview

The Ergotron LX Monitor Arm Extension adds a precise 9-inch reach to compatible LX Desk, Wall, or Keyboard Arms, enhancing ergonomic flexibility and workspace customization. Designed for easy installation and clean cable management, it supports up to 17.6 lbs when extended and comes with a 10-year warranty, ensuring durable, professional-grade performance.

## Description

The LX Extension Arm is a product that can be extended to 9.1 inches (23 cm) by attaching to ergotron LX Arm products. Compatible ergotron products: 45-241-026/45-241-224/45-490-216/45-243-026/45-243-216/45-243-224/45-295-026/45-537-216/216/216/216/216/45-5-537-216/216/45-53 7-224 etc. Visit our website for more details. We recommend installing one extension arm for one arm, not recommended for dual monitor arms. Extending arm reduces load range With the LX Desk Monitor Arm, the load range of 24.5 lbs (11.3 kg) will be reduced to 17.6 lbs. (8.1 kg). 10 year warranty Available in aluminum color, white and matte black. ◆Note (Disclaimer): Please read this product. Please read the instruction manual and use it correctly. Please make sure it is compatible. Arm body sold separately. ◆Customer support window after purchase of the product. japansupport@ergotron.com Please contact this support window if you have any questions about using it.

Review: Used to extend my monitor's reach (added to existing 2 LX extensions), sturdy - I wanted to be able to secure my monitor to the wall in my RV and have it extendable out to the dinette or bed. I can't do that, so I have a pole right next to the wall that it is attached to. I added this extension to my Ergotron LX dual monitor stand I already had, making 3 extensions plus the adjustable arm that the monitor attaches to. It works fine, though the weight is enough that even with a very sturdy pole I got as the base, it still flexes a bit and bounces with the monitor fully extended 38-40" from the pole. But that isn't the fault of the arms, it is the pole that flexes (which isn't surprising, given the weight of the monitor is 7 lbs at 3 feet out from the pole). I think you'd need a pole that was really short, or could also be clamped at the top. My pole is nearly 4 feet tall and very solid (thicker than the original short pole that comes with the LX dual stand), with dual clamps, near the bottom and then maybe halfway up.
Review: amazing - absolutely perfect, easily connects to the monitor arm i bought and did not decrease the sturdiness at all! only added a bit of length but it made the difference i needed!

## Features

- Compatible with LX Arms: Upgrade your LX Desk Arm (45-490-216), LX Wall Arm (45-243-216) or LX Keyboard Arm (45-246-026) with a second extension to increase its reach an additional 9 inches; adding extension may reduce weight capacity; not recommended for use with LX Dual Arms
- Simple installation: Easily and quickly add one extension to an existing LX Arm; includes 9-inch extension and end cap
- Extra flexibility: Another pivot point allows for a wide range of adjustment, expanding use for a broader variety of individuals and applications
- Neat workspace: Streamlined design accentuates any work area and clean cable management routes cables under the arm and out of the way
- Built to last: Extensive quality testing ensures your display stays stable and secure; Ergotron products set the standard for quality with a 10-year warranty and expert technical support

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09HTZVK4F |
| Best Sellers Rank | #661 in Computer Monitor Arms |
| Brand | Ergotron |
| Color | White |
| Customer Reviews | 4.5 4.5 out of 5 stars (925) |
| Date First Available | February 23, 2022 |
| Is Discontinued By Manufacturer | No |
| Item Dimensions LxWxH | 13.25 x 4.75 x 2.5 inches |
| Item Weight | 7.2 ounces |
| Item model number | 45-289-216 |
| Manufacturer | Ergotron |
| Product Dimensions | 13.25 x 4.75 x 2.5 inches |

## Images

![Ergotron – LX Monitor Arm Extension – Add-on for LX Desk and LX Wall Monitor Arms, LX Keyboard Arm – White - Image 1](https://m.media-amazon.com/images/I/51DfO20qT8L.jpg)
![Ergotron – LX Monitor Arm Extension – Add-on for LX Desk and LX Wall Monitor Arms, LX Keyboard Arm – White - Image 2](https://m.media-amazon.com/images/I/51jktHwqaoL.jpg)
![Ergotron – LX Monitor Arm Extension – Add-on for LX Desk and LX Wall Monitor Arms, LX Keyboard Arm – White - Image 3](https://m.media-amazon.com/images/I/71C8XtcbhaL.jpg)

## Available Options

This product comes in different **Color, Size, Style** options.

## Questions & Answers

**Q: Will this work with Amazon Basics Arm?**
A: Yes it will

**Q: Could this be clamped on a bar above my work space and used in a sort of upside down manner?  There is no nearby wall or desk.**
A: It has to be in it's upright position. The way it's build weight (from above) keeps it in place.  If you try to mount it upside down it won't work.

**Q: What diameter does the pole/pipe/mount need to be to fit or work with this extension arm?**
A: For this arm it is 1.38" (35mm). It is not compatible with the LX HD mount which has a 1.57" (40mm) pole

**Q: Will this work with the LX Dual Stacking Arm in order to have a longer arm at the top height?**
A: The top arm is of fixed length and is non adjustable except for up-down tension.  The extension allows the unit to expand the length from the wall bracket to the device.  The device is raised in height by the height of the extension somewhere round six inches.  Only two extensions can be used (raising height 12 inches aprox) and bracket on wall can be mounted lower or higher to set the device to be at the desired level. Excellent quality and durable product, mine is used with a laptop that folds away on the wall when not in use.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Used to extend my monitor's reach (added to existing 2 LX extensions), sturdy
*by B***W on February 1, 2023*

I wanted to be able to secure my monitor to the wall in my RV and have it extendable out to the dinette or bed. I can't do that, so I have a pole right next to the wall that it is attached to. I added this extension to my Ergotron LX dual monitor stand I already had, making 3 extensions plus the adjustable arm that the monitor attaches to. It works fine, though the weight is enough that even with a very sturdy pole I got as the base, it still flexes a bit and bounces with the monitor fully extended 38-40" from the pole. But that isn't the fault of the arms, it is the pole that flexes (which isn't surprising, given the weight of the monitor is 7 lbs at 3 feet out from the pole). I think you'd need a pole that was really short, or could also be clamped at the top. My pole is nearly 4 feet tall and very solid (thicker than the original short pole that comes with the LX dual stand), with dual clamps, near the bottom and then maybe halfway up.

### ⭐⭐⭐⭐⭐ amazing
*by M***E on September 4, 2025*

absolutely perfect, easily connects to the monitor arm i bought and did not decrease the sturdiness at all! only added a bit of length but it made the difference i needed!

### ⭐⭐⭐⭐⭐ Works with HUANUO Dual Monitor 'tree' arms
*by N***R on May 17, 2023*

Awesome for those like me who use a 22" high fps monitor with a 27" 4k monitor. Both of mine are mounted on the HUANUO Dual Monitor Stand and a fairly wide desk, so to get them positioned properly I needed at least one of these. Its super nice to be able to pull the gaming monitor super close when actually gaming while keeping the other monitor farther to the side and not have any visual overlap while sitting at the desk! The only possible downside is that the little cap doesn't snap on where the original HUANUO arm connects to this extension. it appears the Ergotron has a shorter cylinder... but who cares about that right? I'm making those 360 no-scope shots while watching whatever I have on the other screen between skirmishes :D

## Frequently Bought Together

- Ergotron – LX Monitor Arm Extension – Add-on for LX Desk and LX Wall Monitor Arms, LX Keyboard Arm – White
- Ergotron – LX Premium Monitor Arm, Single Monitor Desk Mount – fits Flat Curved Ultrawide Computer Monitors up to 34 Inches, 7 to 25 lbs, VESA 75x75mm or 100x100mm – Tall Pole, White
- Ergotron – LX Monitor Arm, Extension, and Collar Kit – Add-on for LX Tall Pole Monitor Arms – White

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-02-20*