The Ergotron LX Pro Large Base with Grommet Mount (98-729-292) is a mounting conversion kit designed for compatible Ergotron LX Pro monitor arms. It allows the arm to be installed through a suitable opening in a desk or worksurface, offering an alternative to conventional desk-edge clamping.
Featuring a large mounting base and a 12-inch pole, this kit provides a flexible mounting platform for compatible workstation configurations. Its aluminum-and-steel construction is designed for durability, while the black finish complements professional offices, home offices, and shared workspaces.
Key Features
- Grommet mounting: Installs compatible LX Pro monitor arms through a suitable desk opening.
- Large mounting base: Provides a substantial base for compatible monitor arm configurations.
- 12-inch pole: Offers additional mounting height and flexibility compared with the standard-base version.
- Durable construction: Made with aluminum and steel for a sturdy mounting assembly.
- Complete conversion kit: Includes the large base, pole, pole collar, grommet bolt, mounting plate, and adjustment knob.
Product Specifications
| Brand | Ergotron |
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| Product Name | LX Pro Large Base with Grommet Mount |
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| Manufacturer Part Number | 98-729-292 |
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| Product Series | LX Pro |
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| Product Type | Monitor arm mounting base conversion kit |
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| Color | Black |
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| Construction Materials | Aluminum and steel |
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| Maximum Load Capacity | 44 lb (20 kg) |
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| Pole Length | 12 inches |
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| Mounting Method | Desk grommet mounting |
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| Compatible Surface Opening | 10–50 mm (0.4–2 inches) wide and up to 57 mm (2.25 inches) deep |
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| Product Weight | Approximately 1.8 kg (4 lb) |
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| UPC / GTIN | 698833092677 |
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| Warranty | 10-year manufacturer warranty |
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Compatibility
This conversion kit is designed for compatible Ergotron LX Pro monitor arms. Ergotron specifies that LX Pro components are not compatible with the legacy LX series or other product lines. Check the exact model number of your existing arm before purchasing.
The desk or worksurface must have a suitable grommet opening with sufficient clearance for the mounting hardware. Verify the opening dimensions, desk construction, and combined weight of the arm and attached equipment before installation.
What's Included
- Large mounting base
- 12-inch pole
- Pole collar
- Grommet bolt
- Mounting plate
- Adjustment knob
Installation Considerations
Before installation, confirm that the desk opening meets the mounting requirements and that the worksurface can safely support the monitor arm and attached display. Follow the manufacturer's installation instructions and secure all mounting components as directed.
This product is a mounting conversion kit, not a complete monitor arm. A compatible Ergotron LX Pro arm is required separately unless already available.
DC Supplies Product Note
DC Supplies recommends verifying the monitor arm model, desk opening dimensions, worksurface thickness, and total mounted equipment weight before ordering. The 98-729-292 is the black LX Pro Large Base with Grommet Mount. It should not be assumed compatible with legacy LX arms or unrelated mounting systems.
Frequently Asked Questions
1. What is the Ergotron 98-729-292?
It is the black Ergotron LX Pro Large Base with Grommet Mount, a conversion kit for installing compatible LX Pro monitor arms through a suitable desk opening.
2. What is the maximum load capacity?
The listed maximum load capacity is 44 lb (20 kg). The complete installation must remain within the limits of the compatible monitor arm and all mounting components.
3. How long is the included pole?
The kit includes a 12-inch pole, providing additional mounting height compared with the standard-base version.
4. What size desk opening is required?
The specified opening is 10–50 mm (0.4–2 inches) wide and up to 57 mm (2.25 inches) deep. Confirm the mounting requirements against the manufacturer's installation documentation and your desk design.
5. Which monitor arms are compatible?
The kit is designed for compatible Ergotron LX Pro arms. It is not compatible with the legacy LX series or other product lines, so verify the model number before ordering.
6. What warranty does this product carry?
The product is listed with a 10-year manufacturer warranty. Refer to Ergotron's warranty terms for coverage details and exclusions.
