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

660 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 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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