Overview
The Ergotron 98-820-290 LX Pro Standard Base with Low-Profile C-Clamp and Tall Pole is a desktop mounting conversion kit designed for compatible Ergotron LX Pro monitor arms. It allows the arm to be mounted at the edge of a desk without altering the desktop with drilled holes. The low-profile C-clamp provides a streamlined mounting point, while the included 12-inch pole supports compatible LX Pro arm configurations.
Finished in white, this mounting kit is suitable for professional workstations, home offices, and other desk-based display environments. It supports a maximum load of 44 lb (20 kg), subject to the specifications of the compatible monitor arm and the complete installation.
Key Features
- Desk-edge installation: Attaches to a compatible desktop without requiring holes in the desk surface.
- Low-profile C-clamp: Offers a compact mounting design that helps minimize interference with nearby desk structures and cables.
- 12-inch tall pole: Provides the mounting post for supported LX Pro monitor arm configurations.
- Complete mounting kit: Includes the standard base, pole, pole collar, and C-clamp.
- White finish: Coordinates with compatible white LX Pro monitor arm equipment.
Mounting and Installation
The C-clamp is designed for desk edges measuring 12–40 mm (0.47–1.57 inches) thick. The underside of the desk must provide approximately 38 mm (1.5 inches) of clear depth for the clamp, without interference from structural supports, cable trays, or other hardware.
Before installation, verify the desktop dimensions, available clearance, and compatibility of the monitor arm. Follow the manufacturer's installation instructions and ensure that the desk and mounting configuration can safely support the intended equipment.
Compatibility
This conversion kit is designed for selected Ergotron LX Pro monitor arms, including compatible desk monitor arms, tall-pole arms, dual-stacking arms, dual-direct arms, and dual side-by-side arms. Confirm the exact monitor arm model before ordering.
Ergotron states that LX Pro components are not compatible with the legacy LX series or other Ergotron product lines. This C-clamp base is also not intended for adding a third or fourth monitor; those configurations require an appropriate large base.
Applications
- Converting a compatible LX Pro arm to desk-edge mounting.
- Reconfiguring an existing LX Pro workstation.
- Creating organized display setups in offices and home workspaces.
- Mounting compatible monitor arms where drilling into the desktop is undesirable.
DC Supplies Product Note
This product is a mounting base conversion kit, not a complete monitor arm or monitor. Before purchasing, check the exact arm model, desktop thickness, underside clearance, and total supported load to ensure the kit suits your workstation.
Technical Specifications
| Brand | Ergotron |
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| Manufacturer Part Number | 98-820-290 |
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| Product Series | LX Pro |
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| Product Type | Standard base conversion kit with C-clamp and tall pole |
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| Mounting Method | Desktop edge C-clamp |
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| Pole Length | 12 inches (approximately 30.5 cm) |
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| Maximum Load Capacity | 44 lb (20 kg) |
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| Compatible Desk Thickness | 12–40 mm (0.47–1.57 inches) |
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| Required Underside Clearance | Approximately 38 mm (1.5 inches) of clear depth |
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| Color | White |
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| Product Weight | Approximately 3.7 lb (1.7 kg) |
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| Package Contents | Standard base, 12-inch pole, pole collar, C-clamp |
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| Certification | BIFMA LEVEL 2 |
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| Limited Warranty | 10 years |
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| UPC / GTIN | 0698833096835 |
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Frequently Asked Questions
1. What is the Ergotron 98-820-290?
It is an LX Pro standard base conversion kit featuring a low-profile C-clamp and 12-inch pole for mounting compatible monitor arms at a desk edge.
2. Does this mounting kit require drilling?
No. The C-clamp attaches to the edge of a compatible desk without requiring holes in the desktop.
3. What is the maximum load capacity?
The base supports a maximum load of 44 lb (20 kg). The complete setup must also remain within the compatible monitor arm's specified limits.
4. What desk thickness does the C-clamp support?
The clamp is designed for desk edges 12–40 mm (0.47–1.57 inches) thick, with approximately 38 mm (1.5 inches) of clear space beneath the desk.
5. What is included in the package?
The kit includes a standard base, 12-inch pole, pole collar, and C-clamp. The monitor arm and display are not included as part of this conversion kit.
6. Is it compatible with legacy Ergotron LX arms?
No. Ergotron identifies LX Pro components as incompatible with the legacy LX series and other product lines. Check the arm's exact model number before ordering.
