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Polished aluminium articulating arm, pole, keyboard tray and desk clamp base for displays up to 42 inches

Ergotron

Ergotron WorkFit-LX 45-405-026 Sit-Stand Desk Mount System stand

SKU CH-MA49-MPP8F MPN 45-405-026

Articulating aluminium arm kit holds a display up to 42 inches and keyboard tray for sit-stand desktop use

  • TypeTools and hardware
  • Size100% Standard
  • Supports LCD displays up to 42 inches for spacious viewing
  • Articulating arm enables smooth sit-stand transitions throughout the day
  • Includes keyboard tray and wrist rest for ergonomic typing comfort
  • Dual mounting options with desk clamp and grommet base for flexibility
  • Polished aluminium construction provides durable support for daily use

Sit-stand desk mount system

The Ergotron WorkFit-LX is a complete mounting kit that clamps or grommet-mounts to a desktop. It includes an articulating arm, pole, keyboard arm, tray, wrist rest and brackets to support an LCD display up to 42 inches. The system lets a single user alternate between sitting and standing positions throughout the day.

Polished aluminium construction

The arm, pole and brackets are made from polished aluminium for a clean appearance and rigid movement. All joints articulate smoothly without gas-spring noise, and the fixed desk bases add no electrical load or fan sound to the workspace. Cable routing is managed along the arm to keep the surface tidy.

Screen size up to 42 inches

This mount is rated for displays measuring up to 42 inches diagonally; larger screens exceed the tested capacity and are not supported. Buyers needing to hold monitors above that size should select a different mounting solution.

Highlights

  • Supports LCD displays up to 42 inches for spacious viewing
  • Articulating arm enables smooth sit-stand transitions throughout the day
  • Includes keyboard tray and wrist rest for ergonomic typing comfort
  • Dual mounting options with desk clamp and grommet base for flexibility
  • Polished aluminium construction provides durable support for daily use

Specifications

BrandERGOTRON
Model45-405-026
TypeTools and hardware
Size100% Standard
Shipping weight15.79 kg
Package size610 × 508 × 279 mm

Questions about this item

How do I install the grommet base versus the desk clamp base, and which step is often missed?

Choose one base only — grommet base requires a pre-drilled hole, while the desk clamp base tightens to the rear edge; the step often missed is securing both collars on the pole before adding the articulating arm and keyboard arm.

Which parts will need replacement first with daily sit-stand cycles?

The gas-spring articulating arm and the keyboard-tray pivot see the most cycles; the wrist rest and polished aluminium surfaces show wear earlier than the steel pole or mounting brackets.

At what screen size does the mount reach its stability limit during extended use?

The system is rated for screens up to 42 inches; beyond that the combined weight of display, keyboard tray and accessories can exceed the arm's counter-balance capacity during sustained height changes.

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