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  • Ergotron HX Desk Monitor Arm - Matte Black Ergotron HX Desk Monitor Arm - Matte Black
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% £-255.00
Ergotron HX Desk Monitor Arm — Matte Black
Ergotron HX Desk Monitor Arm — Matte Black
Ergotron HX Desk Monitor Arm — Matte Black
Ergotron HX Desk Monitor Arm — Matte Black
Ergotron HX Desk Monitor Arm — Matte Black
Ergotron HX Desk Monitor Arm — Matte Black
Ergotron HX Desk Monitor Arm — Matte Black
Ergotron HX Desk Monitor Arm — Matte Black
Ergotron HX Desk Monitor Arm — Matte Black
Ergotron HX Desk Monitor Arm — Matte Black
Ergotron HX Desk Monitor Arm — Matte Black
Ergotron HX Desk Monitor Arm — Matte Black
Ergotron

Ergotron HX Desk Monitor Arm - Matte Black

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Product SKU: 45-475-224
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Large monitors and ultra-wide screens are fantastic for creative work — but they need a mount that can actually handle them. The Ergotron HX Desk Monitor Arm is built specifically for heavy, oversized displays: monitors up to 49 inches and between 9.1 and 19.1 kg (20–42 lbs). If you're running a large curved ultra-wide, a high-end 4K display, or a broadcast-grade monitor, this is the arm that was designed for it.

The HX uses Ergotron's Constant Force™ Technology — the same counterbalance mechanism found across the Ergotron professional range — to make a 14 kg monitor feel effortless to reposition. You get 29.2 cm of height adjustment, 180° pan at the base, 70° of tilt (65° backward, 5° forward), and full 360° rotation. VESA compatibility covers MIS-D (75x75 mm and 100x100 mm), MIS-E (200x100 mm), and MIS-F (200x200 mm) — the larger VESA patterns used by bigger panels, which most arms don't support.

Unlike the MXV and LX Pro, the HX ships with both a desk clamp and a grommet mount in the box. The clamp fits desk edges from 10 to 66 mm thick; the grommet mount handles through-hole installations. No extra hardware to order. The arm is BIFMA level® 2 certified, 10,000-cycle motion tested, and backed by Ergotron's 10-year warranty.

Key Features

  • Supports monitors up to 49 inches and 19.1 kg (42 lbs) — rated down to 9.1 kg minimum
  • 29.2 cm (11.5 inches) of smooth height adjustment
  • Tilt 65° backward / 5° forward, 180° pan, 360° rotation (landscape to portrait)
  • Constant Force™ Technology for effortless repositioning of heavy displays
  • VESA MIS-D (75/100 mm), MIS-E (200x100 mm) and MIS-F (200x200 mm) support
  • Both desk clamp AND grommet mount included in the box
  • Desk clamp fits surfaces 10–66 mm thick
  • BIFMA level® 2 certified
  • 10-year Ergotron warranty
  • 10,000-cycle motion tested

What's in the Box

  • Ergotron HX arm and extension
  • Monitor pivot
  • Desk clamp
  • Grommet mount
  • Mounting hardware

Product Q&A

Q: What size and weight of monitor does the HX support?

A: The HX supports monitors up to 49 inches with a weight between 9.1 kg and 19.1 kg (20–42 lbs). This makes it ideal for large curved ultra-wides, 32-inch+ high-resolution displays, and other oversized panels that standard monitor arms cannot handle. If your monitor weighs less than 9.1 kg, the HX is not the right fit — the MXV or LX Pro would be a better choice.

Q: What VESA patterns does the HX support?

A: The HX supports three VESA patterns: MIS-D (75x75 mm and 100x100 mm), MIS-E (200x100 mm), and MIS-F (200x200 mm). The larger MIS-E and MIS-F patterns are common on bigger curved and ultra-wide panels. Check your monitor's manual or rear panel to confirm which pattern your display uses.

Q: Does the HX come with both a desk clamp and a grommet mount?

A: Yes. Unlike the MXV and LX Pro, the HX includes both a desk clamp and a grommet mount in the box. The desk clamp fits surfaces from 10 mm to 66 mm thick. The grommet mount is used when you want to install through a hole in your desk rather than clamping to the edge.

Q: Can I use the HX with a standard 32-inch monitor?

A: Yes, as long as the monitor weighs at least 9.1 kg. The HX is calibrated for heavy displays — if your monitor is under 9.1 kg, the arm will not hold position correctly. For lighter 32-inch screens, the MXV (up to 9.1 kg) or LX Pro (up to 10 kg) are better suited.

Q: What is the maximum extension reach of the HX?

A: The HX arm reaches up to 46 cm (18 inches) from the base to the VESA plate. The exact reach depends on the position of the extension relative to the arm. This gives you enough depth to push the monitor back to the rear of a deep desk or pull it forward for close-up work.

Specification Detail
Part Number 45-475-224
Colour Matte Black
Attachment Options Desk Clamp & Grommet Mount (both included)
Screen Size Supported Up to 49 inches
Weight Capacity 9.1 – 19.1 kg (20 – 42 lbs)
Height Adjustment (Lift) 29.2 cm (11.5 inches)
Tilt Range 65° backward / 5° forward
Pan Range 180° at base
Rotation 360° (landscape to portrait)
VESA Compatibility MIS-D (75x75 mm & 100x100 mm), MIS-E (200x100 mm), MIS-F (200x200 mm)
Desk Clamp Thickness 10 – 66 mm (0.4 – 2.6 inches)
Product Weight 7.0 kg
Shipping Weight 8.3 kg
Certification BIFMA level® 2
Warranty 10 years
Quality Testing 10,000-cycle motion test

Download HX Monitor Arm User Guide (PDF)

Download HX Monitor Arm Installation Guide (PDF)

The HX is compatible with monitors and displays that have a VESA MIS-D (75x75 mm or 100x100 mm), MIS-E (200x100 mm), or MIS-F (200x200 mm) mounting pattern. It is specifically designed for large, heavy panels that exceed the weight capacity of standard monitor arms. Works with Mac, PC and any VESA-compatible display.

Compatible Monitors (VESA standard)

  • Large curved ultra-wide monitors (34–49 inches) with MIS-E or MIS-F VESA pattern
  • High-end 32-inch+ 4K displays from Dell, LG, Samsung, and other major brands
  • Broadcast-grade and professional studio monitors with MIS-F mounting
  • Apple Pro Display XDR (with VESA mount option)
  • Any VESA-compatible monitor weighing 9.1–19.1 kg

Desk Compatibility

  • Desk clamp fits surfaces 10–66 mm thick (included)
  • Grommet mount for through-hole installation (included)

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