M/Flex for M2 Pro Triple Monitor Arms with Sliders

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

Design Features

  • Triple monitor support

    Triple monitor support

    Designed to mount three screens for advanced workflows and multitasking.
  • Slider adjustment for easier spacing

    Slider adjustment for easier spacing

    Slide monitors side-to-side to dial in alignment without constantly repositioning the entire arm.
  • Quick Release joints

    Quick Release joints

    Snap-together installation makes assembly fast and upgrades simple.
  • Modular, scalable system

    Modular, scalable system

    Add or adjust monitors without rebuilding your setup.
  • Living Product Certified (Net Positive)

    Living Product Certified (Net Positive)

    Manufactured to be climate, water, and energy positive.
  • Independent monitor adjustment

    Independent monitor adjustment

    Fine-tune each screen individually for better comfort and visibility.
  • Ergonomic posture support

    Ergonomic posture support

    Helps reduce neck strain by keeping screens at the right height and viewing distance.
  • Built-in cable management

    Built-in cable management

    Routes cords neatly through the system for a cleaner workspace.

Specifications

Variant

SKU

X23BFSBC121NNNN

Number of Monitors

Triple Monitors

Warranty

15 Years

Dimensions

Maximum Monitor Width

26 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 triple monitor setup with more control over screen spacing and alignment.

- Ideal for analysts, developers, and finance teams working across multiple dashboards

- Great for home offices where desk space is limited and clean layout matters

- A strong fit for anyone who wants a more precise, symmetrical multi-monitor setup

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.

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

Best monitor arm w/ built-in dock.

The iPhone of monitor arms.

4.6
Rated 4.6 out of 5 stars
Based on 9 reviews
Total 5 star reviews: 6 Total 4 star reviews: 2 Total 3 star reviews: 1 Total 2 star reviews: 0 Total 1 star reviews: 0
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9 reviews
  • Grace K.
    Verified Buyer
    Rated 5 out of 5 stars
    Has totally changed my workflow

    Really solid system. Has totally changed my workflow!

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  • Priya K.
    Verified Buyer
    Rated 5 out of 5 stars
    Sliders make adjusting super easy-- I was skeptical

    Sliders make adjusting super easy-- I was skeptical but the cost is worth it

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  • Mason M.
    Verified Buyer
    Rated 5 out of 5 stars
    Very happy with this purchase

    Very happy with this purchase, another win in the humanscale collection

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  • Noah J.
    Verified Buyer
    Rated 5 out of 5 stars
    Nice build

    Nice build, looks clean. Would be perfect if the sliders were just a touch smoother.

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  • Rosa G.
    Verified Buyer
    Rated 4 out of 5 stars
    Great for trading setups

    Great for trading setups. Love sliding the monitors back and forth depending on what I’m working on.

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