The Ergotron LX HD Sit-Stand Desk Mount LCD Arm (45-384-026) is a heavy-duty monitor mounting solution designed to make it easier to adjust a compatible display between sitting and standing working positions. Its extended vertical movement and articulated arm allow users to reposition a screen for different tasks, helping create a flexible and comfortable workstation.
Finished in polished aluminum, the LX HD combines Ergotron's Constant Force movement technology with a sturdy mounting structure, integrated cable management, and a design that folds back toward the desk when the display is not in use.
Key Features
- Heavy-duty display support: Accommodates compatible monitors and displays weighing 6.3–13.6 kg (14–30 lb).
- Sit-stand adjustment: Provides 51 cm (20 inches) of vertical movement to help position the screen for sitting or standing.
- Extended reach: Extends the display up to approximately 84 cm (33 inches) from its mounting point.
- Constant Force technology: Supports smooth display repositioning when the arm is properly adjusted for the monitor's weight.
- Flexible installation: Supports desk-clamp or grommet mounting, offering options for compatible workstation surfaces.
Designed for Sit-Stand Workstations
The LX HD provides a 51 cm (20-inch) vertical adjustment range, allowing users to reposition a supported display as their working posture changes. Its articulated arm also enables the screen to move closer, extend outward, or fold back toward the desk when additional workspace is needed.
The arm is designed for a single compatible display weighing between 6.3 and 13.6 kg (14–30 lb). Screen-size recommendations are approximate; display weight, dimensions, mounting pattern, and depth must also meet the product's compatibility requirements.
Movement and Viewing Adjustments
The mounting system supports height adjustment, tilt, horizontal panning, and screen rotation. The display can tilt approximately 70 degrees upward and 5 degrees downward from its neutral position, pan through 360 degrees, and rotate up to 90 degrees, subject to the mounting configuration and available clearance.
With a maximum extension of approximately 84 cm (33 inches), the arm provides flexibility for workstations that need the display to move between different viewing positions. The arm can also fold toward the desk to reduce its footprint when the screen is not being used.
Mounting Options and Compatibility
The LX HD includes mounting options for compatible desk installations. The desk clamp attaches to a desk edge up to approximately 65 mm (2.5 inches) thick. The grommet mount fits a compatible through-hole measuring approximately 13–64 mm (0.5–2.5 inches) wide, subject to the specified desk-thickness limits.
The display interface supports VESA MIS-D, MIS-E, and MIS-F mounting standards. Check the display's exact mounting-hole pattern and weight before installation to ensure compatibility with the arm and the selected mounting method.
Cable Management and Secure Installation
Integrated cable routing helps keep monitor cables organized beneath the arm instead of leaving them loose across the desk. Locking connections between the arm, extension, and base help prevent accidental separation from impacts or movement. The base also includes anchor holes for a compatible cable lock.
Because the display can move between sitting and standing heights, ensure that the monitor's power and signal cables have sufficient length and flexibility throughout the arm's full range of movement.
Typical Applications
- Sit-stand office workstations
- Professional desktop computer environments
- Workstations using heavier monitors or compatible displays
- Digital signage installations using a suitable display
- Work areas where the screen needs to move out of the way when not in use
DC Supplies Product Note
Before ordering, confirm that the display weighs between 6.3 and 13.6 kg (14–30 lb), has a compatible VESA mounting pattern, and fits the intended mounting configuration. Check desk thickness or grommet-hole dimensions before installation. For sit-stand use, allow sufficient cable slack for the entire height-adjustment range.
Technical Specifications
| Brand | Ergotron |
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| MPN | 45-384-026 |
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| Product Type | Heavy-duty sit-stand desk monitor arm |
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| Product Series | LX HD |
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| Model | LX HD Sit-Stand Desk Mount LCD Arm |
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| Colour / Finish | Polished aluminum |
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| Display Capacity | 1 display |
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| Recommended Display Size | Up to approximately 46 inches, subject to weight and mounting compatibility |
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| Weight Capacity | 6.3–13.6 kg (14–30 lb) |
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| Vertical Adjustment | 51 cm (20 inches) |
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| Maximum Extension | 84 cm (33 inches) |
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| Tilt | Approximately 70° upward and 5° downward |
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| Pan | 360° |
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| Rotation | 90° |
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| VESA Compatibility | MIS-D, MIS-E, and MIS-F |
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| Mounting Options | Desk clamp or grommet mount |
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| Maximum Desk-Clamp Thickness | Approximately 65 mm (2.5 inches) |
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| Grommet-Hole Compatibility | Approximately 13–64 mm (0.5–2.5 inches) wide |
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| Movement Technology | Constant Force |
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| Cable Management | Integrated cable routing |
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| Security Features | Locking connections and base anchor holes for a compatible cable lock |
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| Warranty | Confirm the applicable warranty for the sales region |
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Frequently Asked Questions
1. What is the Ergotron 45-384-026 designed for?
It is a heavy-duty sit-stand desk arm designed to support one compatible monitor or display and allow height and viewing-position adjustments.
2. What is its maximum supported display weight?
The specified weight range is 6.3–13.6 kg (14–30 lb). Check both the display's weight and its mounting compatibility before installation.
3. How much vertical adjustment does the arm provide?
The arm provides 51 cm (20 inches) of vertical adjustment to help users position the screen for sitting or standing work.
4. Can the arm be installed without drilling a grommet hole?
Yes. It supports a desk-clamp installation as well as a grommet-mount option. The selected method must match the desk's dimensions and construction.
5. Which VESA mounting standards are supported?
The display interface supports VESA MIS-D, MIS-E, and MIS-F standards. Verify the exact hole pattern on the display before ordering.
6. What should I check before using it at a sit-stand desk?
Confirm the desk and mount are securely installed, the display is within the supported weight range, and all cables have enough slack to accommodate the full height-adjustment movement.
