Ergotron 45-708-290 – LX Pro Desk Monitor Arm, Grommet Mount, White
Overview
The Ergotron 45-708-290 LX Pro Desk Monitor Arm is a single-display desk mount with a grommet mounting configuration and white finish. It uses Constant Force technology for smooth monitor positioning and provides ergonomic lift, tilt, pan and rotation adjustment for professional workstations.
Technical Information
The LX Pro supports displays from 4 to 22 lb (1.8 to 10 kg), with a typical maximum screen size of 34 inches. The arm provides 13 inches of lift and up to 25 inches of extension. Its monitor pivot provides 180° pan, while the base arm provides 360° pan with the integrated rotation stop engaged to restrict base movement to 180°. The monitor can rotate 360°.
Compatibility
The 45-708-290 supports displays using VESA MIS-D mounting patterns of 75 x 75 mm or 100 x 100 mm. The grommet mount is designed for desk surfaces with a mounting hole between 0.4 and 2 inches (10–50 mm) in diameter and up to 2.4 inches (60 mm) deep. The arm supports one monitor and can also be configured with compatible Ergotron accessories such as a laptop tray or other LX Pro components.
Key Features
- Supports one monitor weighing 4–22 lb (1.8–10 kg)
- Provides 13 inches of lift and up to 25 inches of extension
- Grommet mounting configuration with white finish
- VESA MIS-D compatibility for 75 x 75 mm and 100 x 100 mm patterns
- Constant Force technology with integrated cable management and rotation stop
Applications
The 45-708-290 is designed for commercial offices, professional workstations, hot-desking environments, sit-stand desks and other applications requiring adjustable single-monitor positioning. Its grommet installation provides a fixed desk mounting point while retaining the LX Pro arm's ergonomic range of motion.
DC Supplies Product Note
DC Supplies recommends verifying the exact manufacturer part number before ordering. The 45-708-290 is specifically the white LX Pro Desk Arm with grommet mount. It should not be confused with the visually similar 45-682-290 LX Pro Desk Arm with clamp mounting or the 45-709-290 LX Pro Desk Arm with Tall Pole.
Specifications
| Brand | Ergotron |
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| Manufacturer Part Number | 45-708-290 |
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| Product | LX Pro Desk Monitor Arm, Grommet Mount |
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| Product Type | Single-monitor desk mount arm |
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| Series | LX Pro |
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| Color | White |
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| Display Support | 1 monitor |
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| Typical Maximum Screen Size | Up to 34 in |
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| Weight Capacity | 4–22 lb (1.8–10 kg) |
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| Lift | 13 in (33 cm) |
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| Maximum Extension | 25 in (64 cm) |
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| Tilt | 85° total; +70° / -15° |
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| Monitor Pan | 180° |
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| Base Arm Pan | 360°; 180° with rotation stop engaged |
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| Rotation | 360° |
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| VESA Compatibility | MIS-D, 75 x 75 mm and 100 x 100 mm |
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| Grommet Hole Diameter | 0.4–2 in (10–50 mm) |
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| Maximum Grommet Surface Depth | 2.4 in (60 mm) |
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| Construction | Aluminum |
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| Product Weight | 7.2 lb |
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| Shipping Weight | 10.2 lb |
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| Shipping Dimensions | 16.5 x 14 x 6.6 in (42 x 35.5 x 17 cm) |
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| Warranty | 10 years |
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FAQs
What is the Ergotron 45-708-290?
The 45-708-290 is the Ergotron LX Pro Desk Monitor Arm with a grommet mount and white finish, designed for one monitor.
How much weight can the 45-708-290 support?
The specified display capacity is 4–22 lb (1.8–10 kg).
What monitor size does it support?
Ergotron specifies a typical maximum screen size of 34 inches, provided the display remains within the arm's published weight and dimensional limits.
What VESA patterns are supported?
The arm supports VESA MIS-D patterns of 75 x 75 mm and 100 x 100 mm.
How much lift does the arm provide?
The LX Pro Desk Arm provides 13 inches (33 cm) of lift.
How far can the arm extend?
The maximum extension is 25 inches (64 cm).
What type of desk mounting does this model use?
The 45-708-290 uses a grommet mount. The mounting hardware passes through a suitable desk grommet hole measuring 0.4–2 inches in diameter and up to 2.4 inches deep.
Does the arm support monitor rotation?
Yes. The monitor can rotate 360°. The arm also provides 180° monitor pan and 360° base-arm pan, with an integrated rotation stop available to limit base movement.
What is Constant Force technology?
Constant Force technology provides smooth, consistent movement across the arm's range of motion, allowing the monitor to be repositioned with controlled effort.
What warranty does Ergotron provide?
The LX Pro Desk Monitor Arm is backed by a 10-year warranty.
