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Polished aluminium monitor arm with desk clamp and grommet base, extends 33 inches, folds to 4.5 inches

Ergotron

Ergotron 45-384-026 LX HD Sit-Stand Desk Mount LCD Arm monitor accessory

SKU CH-17SM-AKSD4 MPN 45-384-026

Supports screens up to 46 inches and 14-30 lbs with 20-inch height adjustment for sit-stand use

  • Product typeMonitor Arm
  • Product colorSilver
  • DetailsScreen <= 46 in Capacity: 14–30 lb Lift: 20 in Tilt: 80 Degr
  • Key features20 in (51 cm) height range allows users to move between sitt
  • Product weight17.5 lb (7.94 kg)
  • Sit-stand height range of 20 inches (51 cm) for posture change
  • Extends monitor up to 33 inches (84 cm) then folds to 4.5 inches (12 cm)
  • Supports screens up to 46 inches weighing 14 to 30 lbs
  • Full motion: 80° tilt, 360° pan, 90° rotation for any viewing angle
  • Patented CF motion technology and cable clips for smooth, tidy adjustment

Desk Mount for Screens up to 46 Inches

The Ergotron LX HD arm supports displays weighing 14 to 30 lbs and measuring up to 46 inches. It attaches to a desk using either a clamp or a grommet base, freeing the work surface from a fixed stand. The arm suits users who alternate between sitting and standing while they work.

Sit-Stand Motion with 20-Inch Height Range

A 20-inch vertical lift lets the monitor move with the user’s posture without tools. The arm extends up to 33 inches and folds back to 4.5 inches from the desk rear, reclaiming depth in tight layouts. Integrated cable clips route cords along the aluminium structure.

Sustained Adjustment via Patented CF Motion

Patented CF motion technology holds the screen steady at any point within the 80-degree tilt, 360-degree pan and 90-degree rotation range. Locking connections between arm, extension and base prevent drift during daily height changes. The 17.50-lb aluminium build resists fatigue under continuous repositioning.

How it compares

Measured against everything we stock in Monitor Mounts & Display Accessories, at today’s prices. Recalculated every night.

Price $245.99
Pricier than about 91% of the 10,638 comparable items (median $42.99).

Specifications

Product
Brand nameErgotron
Model name45-384-026
Product typeMonitor Arm
Product colorSilver
Size & build
Product weight17.5 lb (7.94 kg)
Shipping weight9.04 kg
Package size622 × 371 × 193 mm

Questions about this item

How much weight can the arm support before it starts to sag under sustained use?

The arm is rated for monitors weighing 14 to 30 lbs, so it will hold steady within that range.

Does the arm generate any noise or heat when adjusted repeatedly throughout the day?

The mechanism uses passive CF motion technology with no motors or fans, so it runs silently and produces no heat.

What mounting hardware must already be on the desk for this arm to install?

You need either a desk edge up to 2.4" thick for the clamp base or a 12 mm grommet hole for the through-desk mount.

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