M/Flex for M2 Pro Single Monitor Arm with Slider

The world’s best-selling monitor arm. Moves with you to provide effortless adjustment and commercial-grade performance.

Design Features

  • Slider feature for side-to-side movement

    Slider feature for side-to-side movement

    Easily shift your monitor left or right to match your workspace, seating position, or desk layout.
  • Quick Release installation

    Quick Release installation

    Snap-together joints make setup and upgrades fast and secure.
  • Modular monitor arm system

    Modular monitor arm system

    Add, remove, or reconfigure your setup without disrupting the original installation.
  • Living Product Certified (Net Positive)

    Living Product Certified (Net Positive)

    Climate, water, and energy positive manufacturing for reduced environmental impact.
  • Independent adjustment support

    Independent adjustment support

    Ideal for workspaces where monitors need to move for different tasks or users.
  • Ergonomic positioning made simple

    Ergonomic positioning made simple

    Helps reduce neck and shoulder strain by keeping your screen at the right height and distance.
  • Built-in cable management

    Built-in cable management

    Keeps cords routed cleanly through the system for a clutter-free desk.

Specifications

Variant

SKU

X21SDSGC121NNNN

Number of Monitors

Single Monitor

Warranty

15 Years

Dimensions

Maximum Monitor Width

914 mm

Weight

Minimum Monitor Weight

1.4 kg

Maximum Monitor Weight

5.7 kg

Materials & Sustainability

  • Product Materials

    Structural components are made from die-cast aluminum, providing strength and precision while maintaining a lightweight form. Surfaces are finished with a durable powder-coated finish designed to resist scratches, fingerprints, and everyday wear while maintaining a consistent appearance.

Who It's For

For people who want a monitor arm setup that can shift with their workspace, not lock them into one position.

- Ideal for shared desks or hybrid workstations used by multiple people

- Great for home offices where desk space is limited and layouts change often

- A strong fit for multi-use setups like gaming, design work, or dual-purpose workstations

Certifications & Testing
  • HPD
  • DECLARE® - Red List Approved
  • Living Product Challenge
  • CDPH
  • BIFMA LEVEL® - Level 3
  • SCS Indoor Advantage Gold
  • MID

Care, Maintenance & Longevity

  • Monitor Arm Care & Cleaning

    Wipe down with a soft, damp cloth and mild soap if needed.

The iPhone of monitor arms.

Best monitor arm w/ built-in dock.

My dock has been easy to reach, and my desk has been cable-free; it's a tremendous ergonomic improvement.