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

36 in

Weight

Minimum Monitor Weight

3 lb

Maximum Monitor Weight

12.5 lb

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.