The Ergotron LX Pro Dual Stacking Monitor Arm, MPN 45-714-290, is designed to support two compatible monitors in a vertical arrangement using a desk-mounted arm system. Its low-profile C-clamp mounting design helps preserve desk space, while adjustable arms allow users to position their screens for a more comfortable viewing setup.
Part of Ergotron's LX Pro range, this dual-monitor solution combines flexible screen positioning, integrated cable management, and a clean white finish for office, home-office, and professional workstation environments.
Key Features
- Dual-monitor stacking: Supports two compatible displays in a vertical configuration.
- Flexible adjustment: Allows screen height, tilt, pan, and rotation adjustments to suit different viewing preferences.
- Low-profile C-clamp: Mounts to a compatible desk edge without requiring a grommet hole.
- Integrated cable management: Helps organize monitor cables along the arm assembly.
- White finish: Offers a coordinated appearance for contemporary workspaces.
Monitor Compatibility and Ergonomics
The LX Pro Dual Stacking Arm is designed for two monitors, with a maximum recommended screen size of 27 inches per display. Each monitor must weigh between approximately 3.6 and 10 kg (7.9–22 lb), and the combined supported load must not exceed approximately 20 kg (44 lb).
The system provides up to 33 cm (13 inches) of lift and supports tilt, pan, and screen rotation. Actual compatibility depends on monitor weight, dimensions, VESA mounting pattern, and the clearances required for the selected stacked arrangement.
Desk Mounting and Installation
This version uses a low-profile C-clamp for attachment to a compatible desk. Before installation, check the desk thickness, edge shape, underside clearance, and mounting surface strength against Ergotron's installation guidance.
The monitor mounting interface supports VESA MIS-D patterns of 75 × 75 mm and 100 × 100 mm. Confirm that both displays have compatible mounting points and that their dimensions allow the intended vertical arrangement.
Typical Applications
- Office and home-office workstations
- Dual-screen productivity environments
- Administrative and data-focused work areas
- Workstations where vertical monitor placement helps conserve desk space
DC Supplies Product Note
Before ordering, verify the weight and VESA pattern of both monitors, the available desk-edge clearance, and the space required for vertical stacking. Do not exceed the individual or combined load limits specified by the manufacturer.
Technical Specifications
| Brand | Ergotron |
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| MPN | 45-714-290 |
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| Product Type | Dual stacking monitor arm |
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| Product Series | LX Pro |
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| Model | LX Pro Dual Stacking Arm, Low-Profile C-Clamp |
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| Colour | White |
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| Supported Displays | 2 monitors, vertically stacked |
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| Maximum Recommended Screen Size | Up to 27 inches per monitor |
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| Individual Monitor Weight | Approximately 3.6–10 kg (7.9–22 lb) |
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| Combined Load Capacity | Approximately 20 kg (44 lb) |
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| Lift | Up to 33 cm (13 inches) |
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| Tilt | Approximately 85° total range |
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| Pan | Adjustable arm movement |
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| Monitor Rotation | 360° |
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| VESA Compatibility | MIS-D, 75 × 75 mm and 100 × 100 mm |
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| Mounting Type | Low-profile C-clamp desk mount |
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| Cable Management | Integrated cable routing |
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| Material | Aluminum construction |
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| Warranty | 10-year limited manufacturer's warranty |
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Frequently Asked Questions
1. How many monitors does the Ergotron 45-714-290 support?
This model is designed to support two compatible monitors in a vertically stacked arrangement.
2. What is the maximum monitor weight?
Each monitor should weigh approximately 3.6–10 kg (7.9–22 lb), and the combined load must remain within the arm's approximately 20 kg (44 lb) capacity.
3. Does this model require a grommet hole?
No. The 45-714-290 uses a low-profile C-clamp that attaches to a compatible desk edge. Check desk compatibility before installation.
4. Which VESA patterns are supported?
The arm supports VESA MIS-D mounting patterns of 75 × 75 mm and 100 × 100 mm.
5. Can the monitors be repositioned?
Yes. The arm system supports adjustable positioning, including lift, tilt, pan, and monitor rotation, within its specified operating range.
6. What warranty applies to this product?
Ergotron lists a 10-year limited manufacturer's warranty for the LX Pro range. The applicable warranty terms should be checked for the purchase location.
